| Patents for Simon Peter Graham |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| CA-5,579 | Jan. 22, 1876 | S.P. Graham | Twist drill rolling machine | making drills and augers |
| 318,466 | May 26, 1885 | S.P. Graham | Drill Chuck | drill press chucks |
| 339,544 | Apr. 06, 1886 | S.P. Graham | Combined boring-tool and holder | metalworking twist drills |
| CA-24,874 | Sep. 03, 1886 | S.P. Graham | Combined drill and bit shank and holder | metalworking twist drills |
| 433,078 | Jul. 29, 1890 | S.P. Graham | Cutting Tool and Handle | chisels |
| 449,246 | Mar. 31, 1891 | S.P. Graham | Boring-tool holder | drill press chucks |
