| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for William H. Porter | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 6,321X | Jan. 07, 1831 | A. Gorham | Stump machine | stump elevators | |
| CA-259,204 | Mar. 23, 1926 | W.H. Porter | Feed clutch | shingle machines | |
| CA-273,212 | Aug. 16, 1927 | W.H. Porter | Feed clutch | shingle machines | |