| Patents for John R. Snow |
Patents 1 -
10
of 22
      |
| Picture | Number | Date | Patentee | Title |
 | 192,867 | Jul. 10, 1877 | A. Holbrook | Improvement in Mallets |
 | 193,547 | Jul. 24, 1877 | M.M. Pettes | Pinchers |
 | 198,935 | Jan. 08, 1878 | W.L. Gilchrist | Improvement in screw drivers |
 | 201,938 | Apr. 02, 1878 | W.E. Nickerson | Improvement in cutters for reducing bark |
 | 207,421 | Aug. 27, 1878 | R.K. Huntoon | Improvement in gas-exhaust regulators |
 | CA-11,789 | Sep. 20, 1880 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté |
| | CA-13,718 | Nov. 19, 1881 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté |
| | CA-13,719 | Nov. 19, 1881 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté |
| | 291,126 | Jan. 01, 1884 | H.G. Ashton | Safety-Valve |
| | 299,503 | Jun. 03, 1884 | H.G. Ashton | Safety Valves |
