Drilldown: Patents
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Patents > Office
:
DE
or
LU
or
Other
& Applicant type
:
INDIV+COMPANY
or
Other
& IPCs
:
IPC B64B1/40
or
IPC B64B1/58
& CPCs:
CPC B64B1/40
& Family year:
1800 - 1899
& Citations from after 1930:
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Showing below up to 4 results in range #1 to #4.
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