Portable emergency alarm transmitter

- Lifeline Systems, Inc.
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Description

FIG. 1 is a perspective view of a portable emergency alarm transmitter showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view taken from the right of FIG. 1, the opposite side being a mirror image thereof;

FIG. 5 is a front elevational view, the rear elevational view being a mirror image thereof.

Referenced Cited
U.S. Patent Documents
D229085 November 1973 Lutenegger
D269951 August 2, 1983 Eberhardt et al.
4004228 January 18, 1977 Mullett
4300129 November 10, 1981 Cataldo
Other references
  • Jewelers' Circular--Keystone, 7/78, p. 153, Omega Watches--bottom left.
Patent History
Patent number: D277465
Type: Grant
Filed: Jan 10, 1983
Date of Patent: Feb 5, 1985
Assignee: Lifeline Systems, Inc. (Watertown, MA)
Inventor: John B. MacDonald (Dedham, MA)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Weingarten, Schurgin, Gagnebin & Hayes
Application Number: 6/456,767
Classifications
Current U.S. Class: D10/106; Wrist Type (D10/38)