| Patents for John P. Hedstrom |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 908,462 | Jan. 05, 1909 | J.P. Hedstrom | Oscillating mechanism for lap-grinding machines | making handsaws |
| 909,295 | Jan. 12, 1909 | J.P. Hedstrom | Attachment for saw-swages | saw sets |
| 953,692 | Apr. 05, 1910 | J.P. Hedstrom | Retoothing-machine | tool making machines |
| 984,669 | Feb. 21, 1911 | J.P. Hedstrom | Feed-finger for saw-sharpening machines | saw sharpening machines |
| 991,503 | May 09, 1911 | J.P. Hedstrom | Carriage for gang-saw-sharpening machines | saw sharpening machines |
| 1,022,479 | Apr. 09, 1912 | J.P. Hedstrom | Rest for saw-sharpening machines | saw sharpening machines |
| 1,031,711 | Jul. 09, 1912 | J.P. Hedstrom | Feed-finger mechanism | saw sharpening machines |
| 1,031,712 | Jul. 09, 1912 | J.P. Hedstrom | Feed-finger mechanism | saw sharpening machines |
| 1,038,127 | Sep. 10, 1912 | J.P. Hedstrom | Stretcher-rolls | saw sharpening machines |
| 1,173,509 | Feb. 29, 1916 | J.P. Hedstrom | Swage | saw swages |
