| Patents for Gilbert Hart |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 167,527 | Sep. 07, 1875 | G. Hart | Improvement in molds for forming artificial grindstones | grinding wheels |
| 201,778 | Mar. 26, 1878 | G. Hart | Emery Wheel | grinding wheels |
| CA-9,096 | Aug. 06, 1878 | G. Hart | Improvements on emery wheels | grinding wheels |
| 226,066 | Mar. 30, 1880 | G. Hart | Emery-wheel | grinding wheels |
| CA-59,359 | Mar. 21, 1898 | G. Hart | Electrode | electric batteries |
| CA-62,124 | Dec. 20, 1898 | G. Hart | Storage battery plate connectors | electric batteries |
| 639,035 | Dec. 12, 1899 | G. Hart | Chuck for emery-wheels | grinding wheels |
| CA-71,002 | Apr. 16, 1901 | G. Hart | Emery wheel chuck | grinding wheels |
| 779,848 | Jan. 10, 1905 | G. Hart | Grinding-wheel | grinding wheels |
| CA-91,883 | Feb. 28, 1905 | G. Hart | Grinding wheel | grinding wheels |
| 825,460 | Jul. 10, 1906 | G. Hart | Grinding-wheel | grinding wheels |
| CA-102,411 | Dec. 04, 1906 | G. Hart | Grinding wheel | grinding wheels |
| 945,526 | Jan. 04, 1910 | G. Hart | Grinding-wheel | grinding wheels |
