Watlow Electric Heaters & Controls, St. Louis, MO., Silicone Rubber Heaters, Application Guide & Stock List, Bulletin #250, 8 pages. (date unknown). |
Watlow Electric Heaters & Controls, St. Louis, MO., Heaters, Sensors & Controls, Product Brochure on Flexible Heaters, 12 pages. (date unknown). |
Watlow Electric Heaters & Controls, St. Louis, MO., Product Brochure on Silicone Rubber Heaters, 3 pages. (date unknown). |
Electrofilm Mfg. Co., Valencia, CA., Product Broshure on Heating Elements, 3 double-sided pages, Thomas Register. (date unkown). |