Safety lock for an electrical plug
Description
FIG. 1 is a perspective view from the front of a safety lock for an electrical plug, showing my new design;
FIG. 2 is a perspective view from the rear thereof;
FIG. 3 is a top plan view thereof; the bottom view being similar;
FIG. 4 is a front elevational view thereof; and
FIG. 5 is a rear elevational view thereof.
Referenced Cited
U.S. Patent Documents
2664734 | January 1954 | McEneaney |
2733416 | January 1956 | Evalt |
4025140 | May 24, 1977 | Matys |
Patent History
Patent number: D287485
Type: Grant
Filed: Sep 27, 1984
Date of Patent: Dec 30, 1986
Inventors: Merlin L. Hamer (La Jolla, CA), Wayne T. Mitchell (Cardiff-by-the-Sea, CA)
Primary Examiner: Susan J. Lucas
Law Firm: Brown, Martin, Haller & Meador
Application Number: 6/655,147
Type: Grant
Filed: Sep 27, 1984
Date of Patent: Dec 30, 1986
Inventors: Merlin L. Hamer (La Jolla, CA), Wayne T. Mitchell (Cardiff-by-the-Sea, CA)
Primary Examiner: Susan J. Lucas
Law Firm: Brown, Martin, Haller & Meador
Application Number: 6/655,147
Classifications
Current U.S. Class:
D13/28