Drilldown: Patents
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Patents > Year filed:
1912
& Office :
AT or
FR or
NL
& Applicant firm:
None
& National tech categories :
FR 6.4 or
USPC 244/3.23
& IPCs:
IPC B64C39/00
& CPCs:
CPC B64C2700/6295
& Number of text pages:
1-2
& Number of claims:
2-3
Use the filters below to narrow your results.
Showing below up to 5 results in range #1 to #5.