Drilldown: Patents
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Patents > Office
:
BE
or
JP
or
Other
& Applicant type
:
Louis-Marie Le Dantec
or
None
& National tech categories:
FR 6.4
& CPCs
:
CPC B22D33/00
or
CPC B64C2700/6218
or
CPC B64C2700/6256
& Citations from after 1930:
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