Portable door alarm

- Meyer Aluminium Limited
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front perspective view from above and one side of a portable door alarm showing my new design;

FIG. 2 is a view of the opposite side thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof; and

FIG. 5 is a front perspective view thereof with the supporting hook in an extended position.

Referenced Cited
U.S. Patent Documents
D240410 July 1976 Fujiwara
3643249 February 1972 Haywood
3732843 May 1973 Pappas et al.
3878539 April 1975 Gooding
Other references
  • Hardware Age, 8-1975, p. 174-Burglar/Fire Alarm.
Patent History
Patent number: D260741
Type: Grant
Filed: Jun 25, 1979
Date of Patent: Sep 15, 1981
Assignee: Meyer Aluminium Limited (Kowloon)
Inventor: Yanta H. T. Lam (Kowloon)
Primary Examiner: Susan J. Lucas
Law Firm: Wood, Herron & Evans
Application Number: 6/52,017
Classifications
Current U.S. Class: D10/106
International Classification: D1005;