Drilldown: Patents
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Patents > Year filed:
1864
& Office :
GB or
LU or
RU
& National tech categories :
USPC 244/153R or
USPC 244/30 or
None
& Cites these patents :
1912 or
None
& Number of diagram pages:
None
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.