Drilldown: Patents
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Patents > Year filed:
1910 - 1919
& Applicant is inventor:
Yes
& Grant date:
1919
& IPCs
:
IPC B64C27/04
or
IPC B64C3/38
or
IPC B64C39/00
& CPCs
:
CPC B64B1/58
or
CPC B64C39/00
& Number of diagram pages:
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