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Gravity action palette attachment for drawing table tops
US 2,683,640 A
Filed
: 05/15/1951
Issued
: 07/13/1954
Est. Priority Date
: 05/15/1951
Status: Expired due to Term
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Current Assignee
Louis M. Mangine
Original Assignee
Louis M. Mangine
Inventors
Mangine, Louis M.
Application Number
US03/226,426
Time in Patent Office
1,155 Days
Field of Search
US Class Current
248/231.71
CPC Class Codes
B43M 99/00
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