Disk for matrix display

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Description

FIG. 1 is a front elevational view of a disk for a matrix display, showing my new design, the rear elevational view being a mirror image thereof;

FIG. 2 is a side elevational view thereof.

Referenced Cited
U.S. Patent Documents
3975728 August 17, 1976 Winrow
3991496 November 16, 1976 Helwig et al.
Foreign Patent Documents
52-24500 February 1977 JPX
Patent History
Patent number: D271219
Type: Grant
Filed: Dec 11, 1980
Date of Patent: Nov 1, 1983
Assignee: American Sign & Indicator Corporation (Spokane, WA)
Inventor: Donald Morrison (Spokane, WA)
Primary Examiner: Catherine E. Kemper
Law Firm: Wells, St. John & Roberts
Application Number: 6/215,364
Classifications
Current U.S. Class: Attachable To Vertical Surface Or Hanging Type (D20/42)
International Classification: D2003;