Drilldown: Patents
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Patents > Office :
CU or
FR
& Applicant firm:
None
& Grant date:
1860 - 1869
& National tech categories :
FR 20 or
USPC 244/153R or
USPC 244/3.23 or
USPC 244/30 or
None
& First filing:
No
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.