Title:
Universal typewriter spool
United States Patent 3045800


Inventors:
David, Landgraf Walter
Application Number:
US4024960A
Publication Date:
07/24/1962
Filing Date:
07/01/1960
Assignee:
David, Landgraf Walter
Primary Class:
Other Classes:
242/587.1, 242/607.2, 242/611, 400/243
International Classes:
B41J32/00
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