Foley & Lardner, Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans
Packaged solid-state surge protector
 A solid-state surge protection device comprises two electrodes between which is sandwiched a semiconductor chip. A resilient, annular, sealing member comprised of a thermoplastic resin extends around the periphery of the device and is adhered to both electrodes. The resin is a flexible, dielectric material which is not disrupted by heat generated under surge conditons in the device, and which is environmentally inert. The electrodes can be soldered to opposite surfaces of the chip. 
Northern Telecom Limited
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Gerzy William P. James E.
Borkowicz Trumble Anderson