Smoke detector

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Description

FIG. 1 is a top plan view of a smoke detector showing our new design;

FIG. 2 is a bottom plan view thereof; and

FIG. 3 is a typical side elevational view; the front, rear and opposite side views are all substantially the same as FIG. 3.

Referenced Cited
U.S. Patent Documents
3681603 August 1972 Scheidweiler
Other references
  • Faraday Catalog & Handbook of Electrical Signals # 61-DA, Rec'd 1949, p. 5, Signal (center, right). Mobile-Modular Housing Dealer, Dec. 5, 1973, p. 53, Smoke Detector.
Patent History
Patent number: D246958
Type: Grant
Filed: May 20, 1976
Date of Patent: Jan 17, 1978
Assignee: North American Philips Corporation (New York, NY)
Inventors: William J. Rakocy (Nutley, NJ), Masao Tsuji (North Plainfield, NJ)
Primary Examiner: Susan J. Lucas
Attorney: Frank R. Trifari
Application Number: 5/688,357
Classifications
Current U.S. Class: D10/106
International Classification: D1005;