Drilldown: Patents
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Patents > Office :
AH or
DEG or
GB or
HU
& Grant date:
July 24, 1919
& Supplementary to patent:
Patent GB-1917-129378
& CPCs :
CPC B64C13/00 or
CPC B64C33/02
& First filing:
Yes
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.