Drilldown: Patents
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Patents > Applicant type :
INDIV or
agent
& Filing date:
1870 - 1879
& National tech categories :
USPC 244/153R or
USPC 244/97
& IPCs :
IPC B64B1/00 or
IPC B64B1/58 or
IPC B64B1/62 or
IPC B64C3/38
& CPCs:
CPC B64C17/00
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