| Patents for John Bertram & Sons Co., Ltd. |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 131,669 | Sep. 24, 1872 | T.W. Dowling | Improvement in scroll-sawing machines | scrollsaws |
| 145,993 | Dec. 30, 1873 | T.W. Dowling | Improvement in scroll-sawing machines | scrollsaws |
| CA-3,141 | Feb. 24, 1874 | T.W. Dowling | Improvements on scroll-sawing machines | scrollsaws |
| CA-95,988 | Nov. 07, 1905 | C.G. Draeseke | Lathe driving mechanism | metal lathes |
| CA-98,742 | Apr. 24, 1906 | W.T. Sears | Variable speed gearing | metalworking machine mechanisms |
| CA-99,422 | Jun. 05, 1906 | W.J. Hagman | Counter balance | metal planers |
| CA-105,241 | May 14, 1907 | G.T. Reiss | Wheel press | hydraulic metalworking presses |
| CA-105,414 | May 21, 1907 | G.T. Reiss, J.K. Cullen | Car wheel press | hydraulic metalworking presses |
| 862,437 | Aug. 06, 1907 | H. Bertram | Lathe | metal lathes |
| CA-126,241 | Jun. 14, 1910 | E.H. Wray | Forging press and hammer | forging presses |
| CA-126,380 | Jun. 21, 1910 | A. Wood | Wheel press | hydraulic metalworking presses |
| CA-126,381 | Jun. 21, 1910 | G.T. Reiss | Car wheel press | hydraulic metalworking presses |
| CA-148,690 | Jun. 17, 1913 | E.H. Wray, L.M. Pyle | Hammer press | forging presses |
