Push-button ratchet wrench
Chang October 16, 1
U.S. patent number D311,314 [Application Number 07/243,022] was granted by the patent office on 1990-10-16 for push-button ratchet wrench. Invention is credited to Bao L. Chang.
| United States Patent | D311,314 |
| Chang | October 16, 1990 |
Push-button ratchet wrench
Claims
The ornamental design for a push-button ratchet wrench, as shown and described.
| Inventors: | Chang; Bao L. (N/A) (Taichung, TW) |
|---|---|
| Appl. No.: | 07/243,022 |
| Filed: | September 12, 1988 |
| Current U.S. Class: | D8/25 |
| Field of Search: | ;D8/17-19,21-29 ;81/177.1,60-64,57.3 |
References Cited [Referenced By]
U.S. Patent Documents
| 4703676 | November 1987 | Mayer |
| 4722253 | February 1988 | Chow |
| 1208036 | Oct 1970 | GB | |||
Assistant Examiner: Heflin; Clare E.
Attorney, Agent or Firm: Zarley McKee, Thomte, Voorhees & Sease
Description
FIG. 1 is a perspective view of a push-button ratchet wrench showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a bottom plan view thereof, the top view being a mirror image;
FIG. 5 is a left side elevational view thereof; and
FIG. 6 is a right side elevational view thereof.
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