Drilldown: Patents
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National tech categories:
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Showing below up to 40 results in range #1 to #40.
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- Main
- Timeline: Year filed
- Timeline: Year granted
- Timeline: Filing date
- Timeline: Full specification filed date
- Timeline: Grant date
- Timeline: Publication date
- Timeline: Family year
- Calendar: Year filed
- Calendar: Year granted
- Calendar: Full specification filed date
- Calendar: Grant date
- Calendar: Family year
P
- Patent US-1887-382887
- Patent US-1888-381674
- Patent US-1892-486502
- Patent US-1892-502713
- Patent US-1892-503026
- Patent US-1893-493533
- Patent US-1896-559012
- Patent US-1897-588143
- Patent US-1898-622420
- Patent US-1899-630499
- Patent US-1899-633529
- Patent US-1903-728468
- Patent US-1903-737256
- Patent US-1903-744786