Drilldown: Patents
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Patents > Office :
DE or
IT or
JP or
US
& Applicant firm:
None
& Filing date:
1800 - 1899
& National tech categories:
DE 77
& First filing:
No
& Number of text pages:
3
& Number of diagram pages:
5
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.