| Patents for Otto F. Barthel |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
 | 517,066 | Mar. 27, 1894 | J. Randa | Calipers |
 | 578,508 | Mar. 09, 1897 | A.J. Colburn | Potato-planter |
| | 659,290 | Oct. 09, 1900 | L.H. Colburn | Glass-blowing machine |
 | 687,209 | Nov. 26, 1901 | P. Drinkaus | Miter-cutting machine |
 | 702,360 | Jun. 10, 1902 | W.M. Dwight | Automatic-cut-off sawing-machine |
| | 715,352 | Dec. 09, 1902 | L.M. Curry | Cutter Adjuster |
 | 852,846 | May 07, 1907 | J. Rabey | Device For Facilitating The Removal Of Valves |
 | 868,803 | Oct. 22, 1907 | A. Pellrin | Beading or Molding Tool |
| | 1,127,754 | Feb. 09, 1915 | J.J. Grant | Nut-machine |
