| Patents for Gilbert Hart |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 167,527 | Sep. 07, 1875 | G. Hart | Improvement in molds for forming artificial grindstones |
 | 201,778 | Mar. 26, 1878 | G. Hart | Emery Wheel |
| | CA-9,096 | Aug. 06, 1878 | G. Hart | Improvements on emery wheels |
 | 226,066 | Mar. 30, 1880 | G. Hart | Emery-wheel |
| | CA-59,359 | Mar. 21, 1898 | G. Hart | Electrode |
| | CA-62,124 | Dec. 20, 1898 | G. Hart | Storage battery plate connectors |
 | 639,035 | Dec. 12, 1899 | G. Hart | Chuck for emery-wheels |
| | CA-71,002 | Apr. 16, 1901 | G. Hart | Emery wheel chuck |
 | 779,848 | Jan. 10, 1905 | G. Hart | Grinding-wheel |
| | CA-91,883 | Feb. 28, 1905 | G. Hart | Grinding wheel |
