Ultrasonic intrusion alarm

- Sontrix, Inc.
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Description

FIG. 1 is a top perspective view of the ultrasonic intrusion alarm showing our new design;

FIG. 2 is a top plan view thereof on an enlarged scale;

FIG. 3 is a side view thereof on an enlarged scale;

FIG. 4 is a bottom perspective view thereof;

FIG. 5 is a bottom view thereof on an enlarged scale; and,

FIG. 6 is a side view thereof on an enlarged scale, opposite that of FIG. 3 .

Referenced Cited
U.S. Patent Documents
2870434 January 1959 Schulze
3135950 June 1964 Finkle
D233931 December 1974 Goble et al.
Patent History
Patent number: D242779
Type: Grant
Filed: Jul 10, 1975
Date of Patent: Dec 21, 1976
Assignee: Sontrix, Inc. (Boulder, CO)
Inventors: Ralph W. Goble (Eldora, CO), Kenneth R. Hackett (Boulder, CO)
Primary Examiner: Susie J. Mercer
Attorney: Max L. Wymore
Application Number: 5/594,661
Classifications
Current U.S. Class: D10/106
International Classification: D1006;