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SPRING-WHEEL.
US 1,037,004 A
Filed
: 12/02/1911
Issued
: 08/27/1912
Est. Priority Date
: 12/02/1911
Status: Expired due to Term
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Time in Patent Office
269 Days
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US Class Current
152/260
CPC Class Codes
B60C 7/14
using springs
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