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US 2,635,938 A
Filed
: 04/08/1946
Issued
: 04/21/1953
Est. Priority Date
: 04/08/1946
Status: Expired due to Term
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Current Assignee
Robert B. Whitney
,
Wayne B. Weed
Original Assignee
Robert B. Whitney
,
Wayne B. Weed
Inventors
Whitney, Robert B.
,
Weed, Wayne B.
Application Number
US02/660,538
Time in Patent Office
2,570 Days
Field of Search
US Class Current
221/13
CPC Class Codes
G07F 11/54
about vertical axes
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