Drilldown: Patents
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Patents > Office:
DE
& Publication date:
1900 - 1909
& National tech categories :
FR 6.3 or
USPC 244/90R
& IPCs :
IPC B64B1/58 or
IPC B64C3/18 or
IPC B64C33/00
& Number of diagram pages:
1
& Number of figures:
3
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