Combined annunciator and switching unit for hospital patients

- MRD, Inc.
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Description

FIG. 1 is a front perspective view of combined annunicator and switching unit for hospital patients showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D255553 June 24, 1980 Izumi
D273848 May 15, 1984 Monahan
D319031 August 13, 1991 Levinson
D321330 November 5, 1991 Gagnon et al.
Other references
  • NuTone-Electronic Products Division 1979 p. 27-1SA-53 Inside Speaker.
Patent History
Patent number: D326238
Type: Grant
Filed: Jul 2, 1990
Date of Patent: May 19, 1992
Assignee: MRD, Inc. (Austin, TX)
Inventor: Robert J. Spinosa (Austin, TX)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Marcus Jackson
Law Firm: Niro, Scavone, Haller & Niro
Application Number: 7/547,583
Classifications
Current U.S. Class: With Closure Panel (D10/18); D10/104