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US 2,662,217 A
Filed
: 07/08/1950
Issued
: 12/08/1953
Est. Priority Date
: 03/30/1949
Status: Expired due to Term
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Current Assignee
Roberts Walter Van B
Original Assignee
Roberts Walter Van B
Inventors
ROBERTS WALTER VAN B
Application Number
US03/172,746
Time in Patent Office
1,249 Days
Field of Search
US Class Current
333/197
CPC Class Codes
H03H 9/50
Mechanical coupling means
Y10T 74/22
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