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Publication numberUSD223431 S
Publication typeGrant
Publication dateApr 18, 1972
Filing dateDec 9, 1970
Publication numberUS D223431 S, US D223431S, US-S-D223431, USD223431 S, USD223431S
InventorsDan C. Muessel
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric control key
US D223431 S
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Description  (OCR text may contain errors)

United States Patent Ofiice Des. 223,431

Patented Apr. 18, 1972 ELECTRIC CONTROL KEY Dan C. Muessel, Stamford, Conn., and William Eisenreich, White Plains, N.Y., assignors to Eaton Yale & Towne Inc., Cleveland, Ohio Filed Dec. 9, 1970, Ser. No. 26,367

Term of patent 14 years Int. Cl. D8-06' U.S. Cl. D8136 il i References Cited UNITED STATES PATENTS D. 213,587 3/1969 -Unter D8--136 3,392,558 7/1968 Hedin et a1. 317134 X 3,283,550 11/1966 Bradway.

WALLACE R. BURKE, Primary Examiner A. P. DOUGLAS, Assistant Examiner