| All Patents of Type: commutator truing tools |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 430,094 | Jun. 10, 1890 | A.D. Spencer | Tool for Turning Dynamo Commutators | commutator truing tools |
| 459,572 | Sep. 15, 1891 | A.K. Bonta | Commutator Turning Device | commutator truing tools |
| 635,346 | Oct. 24, 1899 | R.S. Papprill | Tool for Abrasive Purposes | commutator truing tools |
| 651,342 | Jun. 12, 1900 | E.D. Carr | Commutator-Truing Device | commutator truing tools |
| 723,399 | Mar. 24, 1903 | J.B. MacIntosh | Device for Filing Commutators for Dynamos or Motors | commutator truing tools |
| 945,784 | Jan. 11, 1910 | O.E. Hunt | Commutator Truing Machine | commutator truing tools |
| 982,367 | Jan. 24, 1911 | W.H. Jordan | Machine for Grinding Commutators of Dynamos and Motors | commutator truing tools |
| 1,158,532 | Nov. 02, 1915 | J. Moles | Commutator Turning Tool | commutator truing tools |
| 1,598,077 | Aug. 31, 1926 | A.L. Halliday | Commutator Dresser | commutator truing tools |
