Drilldown: Patents
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Patents > Year filed:
1906
& Granted:
Yes
& Assigned to:
None
& National tech categories :
DE 77h or
FR 6.4 or
USPC 244/3.23 or
USPC 244/30
& CPCs:
CPC B64B1/58
& Number of text pages:
1-2
& Number of diagram pages:
3
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Showing below up to 2 results in range #1 to #2.