Card reader for computerized access control system
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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.
|D234142||January 1975||Snow et al.|
|D234699||April 1975||Conway et al.|
- I.B.M. Data Processor for Managers of I.B.M. Installations, Dec. 1957, p. 8, card reader.
International Classification: D1402;