Drilldown: Patents
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Patents > Year filed:
1911
& Office :
AT or
FR
& Applicant firm:
None
& Supplementary to patent:
None
& IPCs :
IPC B64C3/00 or
IPC B64C33/02 or
IPC B64C35/00 or
IPC B64C39/00
& CPCs:
CPC B64C3/00
& Number of claims:
4-7
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construction (2) ·
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Showing below up to 4 results in range #1 to #4.