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File
US 1,690,812 A
Filed
: 10/08/1927
Issued
: 11/06/1928
Est. Priority Date
: 10/08/1927
Status: Expired due to Term
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Current Assignee
Charles E. Bertels
Original Assignee
Charles E. Bertels
Inventors
Bertels, Charles E.
Application Number
US02/224,980
Time in Patent Office
395 Days
Field of Search
US Class Current
407/29.11
CPC Class Codes
B23D 71/00
Filing or rasping tools; Se...
Y10T 29/44
Filing
Y10T 407/1805
Flexible blade or carrier t...
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