Drilldown: Patents
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Patents > Office :
DE or
HU
& National tech categories :
DE 77h.2 or
DE 77h.5 or
FR 6.3 or
FR 6.4 or
USPC 244/22
& IPCs:
IPC B64C3/44
& CPCs:
CPC B64C3/44
& First filing:
Yes
& Number of diagram pages:
None
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Showing below up to 1 result in range #1 to #1.