Drilldown: Patents
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Patents > Publication date:
1800 - 1899
& CPCs :
CPC B64B1/40 or
CPC B64C2700/6256 or
CPC B64C3/00
& Family year:
1892
& Citations from after 1930:
None
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.