Drilldown: Patents
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- Publications (24567)
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Patents > Year granted:
1924
& Office :
CA or
CH or
DE or
DK
& National tech categories :
DE 77h.2 or
DE 77h.5 or
USPC 244/22
& IPCs:
IPC B64C3/56
& Citations from after 1930:
None
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.