Drilldown: Patents
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Patents > Office:
DE
& National tech categories :
DE 77h.5 or
HU V/h or
USPC 244/48
& CPCs :
CPC B64C17/00 or
CPC B64C3/385 or
CPC B64C35/00
& Family year:
1914
& Number of figures:
2-4
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Showing below up to 1 result in range #1 to #1.