| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Frank E. Hartley | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 381,968 | May 01, 1888 | N. Tesla | Electro-magnetic motor | induction motors | |
| 381,969 | May 01, 1888 | N. Tesla | Electro-magnetic motor | induction motors | |
| 408,565 | Aug. 06, 1889 | G.D. Woodworth | Cigar Box Opener | combination tools | |
| 416,194 | Dec. 03, 1889 | N. Tesla | Electric Motor | ||