Drilldown: Patents
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Patents > Filing date:
1800 - 1899
& National tech categories :
DE 77 or
USPC 244/45R or
USPC 244/90R or
None
& CPCs:
CPC B64B1/00
& Family year:
1887
& First filing:
No
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.