Combined door viewer and two-way intercom unit

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FIG. is a rear elevational view of a combined door viewer and two-way intercom unit showing my new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a right side elevational view, with the left side being a mirror image thereof.

FIG. 4 is a top plan view; and

FIG. 5 is a bottom plan view.

Referenced Cited
U.S. Patent Documents
D204987 June 1966 Iverson
D210595 March 1968 Kahn
2646496 July 1953 Takach
2784252 March 1957 Jones
Other references
  • Radio Shack, '75 Catalog, .COPYRGT.'74, p. 43, Item #43-226.
Patent History
Patent number: D283130
Type: Grant
Filed: Nov 30, 1983
Date of Patent: Mar 25, 1986
Assignee: Claiborne Electronics, Inc. (Cincinnati, OH)
Inventor: Charles B. Boenning (Cincinnati, OH)
Primary Examiner: Jane E. Corrigan
Law Firm: Wood, Herron & Evans
Application Number: 6/556,283
Current U.S. Class: D14/92; D10/104