Drilldown: Patents
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- Patents (17555)
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Patents > Year granted:
1918
& Office :
AT or
DE or
GR
& Supplementary to patent:
None
& National tech categories :
DE 77h.9 or
USPC 244/30
& CPCs :
CPC B64C2700/6212 or
None
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.