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US 1,908,503 A
Filed
: 04/22/1929
Issued
: 05/09/1933
Est. Priority Date
: 04/22/1929
Status: Expired due to Term
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16
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16 Citations
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Current Assignee
Robert H. Behrend
,
Wilburn L. Day
Original Assignee
Robert H. Behrend
,
Wilburn L. Day
Inventors
Behrend, Robert H.
,
Day, Wilburn L.
Application Number
US02/357,162
Time in Patent Office
1,478 Days
Field of Search
US Class Current
338/37
CPC Class Codes
B60C 23/00
Devices for measuring, sign...
B60C 23/02
Signalling devices actuated...
Y10T 137/3662
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