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US 2,556,421 A
Filed
: 06/07/1946
Issued
: 06/12/1951
Est. Priority Date
: 06/07/1946
Status: Expired due to Term
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Current Assignee
William O. Gee Jr
Original Assignee
William O. Gee Jr
Inventors
Gee, William O. Jr.
Application Number
US02/675,111
Time in Patent Office
1,831 Days
Field of Search
US Class Current
369/78
CPC Class Codes
G11B 17/05
specially adapted for discs...
G11B 3/08509
using mechanical detecting ...
G11B 33/027
Covers G11B33/022 takes pre...
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