Security lock for window sash

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Description

FIG. 1 is a top plan view of a security lock for window sash showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image of that shown; and,

FIG. 4 is a bottom plan view thereof.

The rear is plain and un-ornamented, and the broken-line disclosure is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D249017 August 22, 1978 Costello
D268643 April 19, 1983 Anderson
D293548 January 5, 1988 Bates et al.
D350275 September 6, 1994 Olsen et al.
4102546 July 25, 1978 Costello
4223930 September 23, 1980 Costello
4235465 November 25, 1980 Costello
Patent History
Patent number: D399120
Type: Grant
Filed: Dec 13, 1996
Date of Patent: Oct 6, 1998
Inventor: Michael Costello (East Boston, MA)
Primary Examiner: Brian N. Vinson
Attorney: Morse & Altman
Application Number: 0/63,741
Classifications
Current U.S. Class: D/8338; D8/343
International Classification: 0807;