Screw driver shaft
Description
FIG. 1 is a top plan view of a screw driver shaft showing my new design;
FIG. 2 is a side elevational view thereof;
FIG. 3 is an end elevational view thereof;
FIG. 4 is an opposite end elevational view thereof.
The broken lines are shown for illustrative purposes.
Referenced Cited
U.S. Patent Documents
Other references
| 1366341 | January 1921 | Anderson |
| 2323018 | June 1943 | De Vellier |
| 2920489 | January 1960 | Piquet |
| 2936010 | May 1960 | Ansingh |
- Snap-On Tools Catalog, 3-1979, p. 139, screw driver shaft (bottom right photograph, 2nd from left).
Patent History
Patent number: D273556
Type: Grant
Filed: Jun 3, 1981
Date of Patent: Apr 24, 1984
Inventor: Carl M. Henry (Toledo, OH)
Primary Examiner: Susan J. Lucas
Attorney: George R. Royer
Application Number: 6/270,127
Type: Grant
Filed: Jun 3, 1981
Date of Patent: Apr 24, 1984
Inventor: Carl M. Henry (Toledo, OH)
Primary Examiner: Susan J. Lucas
Attorney: George R. Royer
Application Number: 6/270,127
Classifications
Current U.S. Class:
D 8/86
