Clear Pyrex Third-Party Products 

Certain clear Pyrex shapes & sizes were designed specifically to fulfill the needs of other companies, often makers of chrome-plated or silver-plated serving ware or small appliances.  These unique Pyrex products were not marketed by Corning directly to the consumer for individual purchase, instead they were part of a set sold by a third-party manufacturer.
During the 1930s, certain Pyrex casserole shapes were produced on behalf of other companies who manufactured matching metal stands and distributed the finished product, including octagons and other specialty shapes.


Round Divided Dishes (595): 

The first product to incorporate a 595 divided dish seems to be the electric Hot Server from Chase Brass & Copper Co., in the 1930s.  Although a 595 has a lot in common with the older 130 round divided dish, they are not the same item at all.  A 595 usually has concentric rings embossed on its bottom, and it is ½ inch deeper than a 130.
Through the 1940s & 1950s, the 595 became an insert for enclosed metal serving dishes from a variety of brands, like Buenilum, Continental Silver Co., Farber Bros., Everlast, and more.  Metal lids were provided with all types of sets using a 595 divided dish.  Most 595s are divided, but a non-divided version also exists.  It is numbered 595 as well.


Pyrex 595 round divided dish, covered server
Covered server by Buenilum, 595 Pyrex divided dish.


Electric Snack Server Pots (599): 

Introduced in 1934, Electric Snack Servers from Chase Brass & Copper Co. were equipped with three 1 Qt Pyrex containers numbered 599.  They are comparable to 504 (1 Qt) bean pots, but with different handles, and a 599 seems taller and more narrow.  Metal lids were provided with every set, so there are no Pyrex lids that fit this size.
Dunbar Glass later produced the same pots for Chase using the "Ovenglas" brand name.  Forman Bros. marketed a very similar appliance, but it uses regular 504 bean pots with their usual Pyrex lids.


Chase Brass & Copper Co. Electric Snack Server, Pyrex 599 pots
Chase Brass & Copper Electric Snack Server with 599 Pyrex pots.


Ice Bucket Inserts: 

Pyrex-lined ice buckets were advertised from the mid 1950s to the late 1960s.  The insert itself has no model number, but it does say "2 Qt" on the bottom.  Although its shape is similar to a bean pot, it has a smaller diameter, so they are not identical.
Numerous metal ware firms produced Pyrex-lined ice buckets, either in aluminum or with a variety of plated finishes, like silver or chrome.  In advertising, they were also suggested as a thermal server for hot or cold foods.  Some ice bucket inserts were combined with a candle-warmer instead, for use as a hot food server.  Either way, metal lids were provided.
The Pyrex insert often has a two-layered exterior coating, silver directly on the glass, and black covering the silver, which gives it a mirrored appearance from the inside.  The coating is not necessarily water-proof, so if the ice bucket is disassembled and washed, the black and silver finishes will flake and dissolve very easily.


Pyrex ice bucket insert
Pyrex ice bucket insert (2 Qt).


Electric Roaster Utensil Set (0377, 0378, 0379): 

Small electric roasting ovens equipped with three rectangular clear Pyrex dishes arrived in the late 1940s.  Brand names include Westinghouse and Kenmore, and there might be others too.
The two smaller Pyrex roaster dishes (0378) use flat lids (0379) with tiny tab handles.  The dish itself does not have handles, and its proportions are similar to a 502 refrigerator dish, but larger, measuring 7 inches long.  The larger dish (0377) did not come with a lid.  It has small tab handles and is comparable to a 503, but it measures 10¼ inches.


Bowls for Electric Mixers: 

Clear Pyrex bowls designed for electric stand mixers were manufactured for Westinghouse and KitchenAid, and there might be other brands too.  The KitchenAid model came with just one bowl, but two sizes of bowls were provided with Westinghouse mixers.  Westinghouse bowls were also produced in opal Pyrex, but clear ones are more common.


Pyrex bowl for KitchenAid stand mixer
Pyrex bowl for KitchenAid stand mixer.  Its unusual heavy base is threaded to securely twist and lock into the base of the mixer.


Blender Jars: 

Several models of the Waring Blendor used Pyrex blender jars between the late 1940s & early 1970s approximately.  Most Waring units have a distinctive clover-leaf shape.  Other manufacturers also might have supplied Pyrex jars with their blenders, and they should be branded appropriately on the base if they are genuine Pyrex.


Three models of Waring Blendor, image from Modern Magic in Food Preparation with the Waring Blendor, 1953
Waring Blendors: Duo-Speed, Chrome, Standard.  Image from Modern Magic in Food Preparation with the Waring Blendor, 1953.
Related Articles:

Clear Pyrex 1915 - 1950: Casseroles, Round, Oval; Baking Pans, Pie Plates 
Authentic Plain White Opal Pyrex, 1950s - 1980s
Isn't that date incorrect?