Drilldown: Patents
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Patents > Year granted:
1860 - 1869
& National tech categories :
FR 6.4 or
USPC 244/3.23 or
USPC 244/80
& CPCs:
CPC F42B10/34
& Cites these patents :
1910 or
Patent AT-1909-47911 or
Patent DE-1910-236694 or
None
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Showing below up to 1 result in range #1 to #1.