Drilldown: Patents
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Patents > Office :
AH or
FR or
MX or
SAX
& Filing date:
1914
& Publication date:
April 1915
& National tech categories :
FR 6.2 or
FR 6.3 or
FR 6.4
& IPCs:
IPC B64C35/00
& CPCs :
CPC B64C2700/6235 or
CPC B64C35/00
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Showing below up to 1 result in range #1 to #1.