Title:
Paper end indicator for typewriters
United States Patent 3091321
US Patent References:
/1071780.html
- - 1071780

/1114633.html
- - 1114633

/1132008.html
- - 1132008

Typewriter sheet end indicator
- - 2474951

Margin signal for typewriters
- - 2913096


Inventors:
Ashworth, William J.
Publication Date:
05/28/1963
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Assignee:
ARTNELL COMPANY
Primary Class:
400/708.100
Other Classes:
400/711, 315/178