Card reader for computerized access control system

- TRW Inc.
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front perspective view of a card reader for computerized access control system illustrating the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a side elevational view thereof.

The rear of the card reader is flat and unadorned.

Referenced Cited
U.S. Patent Documents
D234142 January 1975 Snow et al.
D234699 April 1975 Conway et al.
Other references
  • I.B.M. Data Processor for Managers of I.B.M. Installations, Dec. 1957, p. 8, card reader.
Patent History
Patent number: D248233
Type: Grant
Filed: Jun 23, 1976
Date of Patent: Jun 20, 1978
Assignee: TRW Inc. (Los Angeles, CA)
Inventor: Luigi Dibenedetto (El Segundo, CA)
Primary Examiner: Susan J. Lucas
Attorney: W. Robert Spensley
Application Number: 5/699,152
Classifications
Current U.S. Class: D14/49
International Classification: D1402;