U.S. patent number D311,315 [Application Number 07/120,511] was granted by the patent office on 1990-10-16 for tub strainer wrench with multi-positionable handle. Invention is credited to Robert L. Duke.
United States Patent | D311,315 |
Duke | October 16, 1990 |
Inventors: | Duke; Robert L. (Clemmons, NC) |
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Appl. No.: | 07/120,511 |
Filed: | November 13, 1987 |
Current U.S. Class: | D8/25; D8/14 |
Field of Search: | ;D8/21-29,14 ;81/176.1,121.1-124.7,177.1,177.85,64,180.1,490,179 |
3238823 | March 1966 | Snow |
4125913 | November 1978 | Lewis |
4237754 | December 1980 | Battrick |
4542666 | September 1985 | White |
9341 | 1890 | GB | |||
22143 | 1905 | GB | |||
2183188 | Jun 1987 | GB | |||
Jo Manufacturing Co. Adaptor-Hose Clamp Wing Nut Socket, Cat. #1028/Jun. 24, 1946. . ITE Electrical Components Corp. new product bulletin HT-48, Locknut-Bushing Sockets.. |
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