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US 2,640,490 A
Filed
: 07/15/1949
Issued
: 06/02/1953
Est. Priority Date
: 07/15/1949
Status: Expired due to Term
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5 Citations
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Current Assignee
Ferdinand Kramer
Original Assignee
Ferdinand Kramer
Inventors
Kramer, Ferdinand
Application Number
US03/104,911
Time in Patent Office
1,418 Days
Field of Search
US Class Current
135/15.1
CPC Class Codes
A45B 13/00
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