Lock washer

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Description

FIG. 1 is a perspective view of a lock washer, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D26801 March 1897 Spear
D32218 February 1900 Dougherty
797925 August 1905 Thomas
920947 May 1909 Gilmore
Patent History
Patent number: D263792
Type: Grant
Filed: Mar 21, 1980
Date of Patent: Apr 13, 1982
Inventor: Bengt O. Frieberg (La Habra Heights, CA)
Primary Examiner: B. J. Bullock
Attorney: Francis X. LoJacono
Application Number: 6/131,938
Classifications
Current U.S. Class: D/8399
International Classification: D0808;