Locking device to prevent removal of sliding windows and doors

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Description

FIG. 1 is a perspective view of a locking device to prevent removal of sliding windows and doors, showing my new design;

FIG. 2 is a rear-elevational view thereof;

FIG. 3 is a side-elevational view thereof; and

FIG. 4 is a bottom-plan view thereof.

Referenced Cited
U.S. Patent Documents
3640559 February 1972 Royer
Patent History
Patent number: D254533
Type: Grant
Filed: Dec 19, 1977
Date of Patent: Mar 25, 1980
Inventor: Alfred Gist (Bandon, OR)
Primary Examiner: James M. Gandy
Attorney: Francis X. LoJacono, Sr.
Application Number: 5/861,657
Classifications
Current U.S. Class: D/8331
International Classification: D0807;