Drilldown: Patents
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Patents > Year granted:
1915
& Applicant is inventor :
No or
Yes
& National tech categories:
CH 129b
& CPCs :
CPC B64C23/005 or
CPC B64C2700/6212 or
CPC B64C2700/6256 or
CPC B64C39/005 or
None
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.