| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 313/147 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 480,272 | Aug. 09, 1892 | E.I. Nichols | Ignitor for Gas Engines | ignition systems | |
| 568,180 | Sep. 22, 1896 | N. Tesla | Apparatus for producing electrical currents of high frequency | ||
| 626,352 | Jun. 06, 1899 | G.W. De Tunzelmann | Apparatus for Holding Carbons for Electric Welding | welding apparatus | |
| 2,381,648 | Aug. 07, 1945 | F.W. Curtis | Spark Gap | industrial machine mechanisms | |