| Patents for Chas. G. Allen Co. |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 187,876 | Feb. 27, 1877 | C.M. Lufkin, C.G. Allen | Improvement in horse hay-rakes | hay or straw rakes |
| 583,443 | Jun. 01, 1897 | H. Allen | Mowing-machine sharpener | |
| 648,648 | May 01, 1900 | H. Allen | Mower-knife grinder | |
| 901,515 | Oct. 20, 1908 | H. Allen | Driving mechanism for spindles | drill presses |
| 962,690 | Jun. 28, 1910 | H. Allen | Driving mechanism for drill-spindles | drill presses |
| 1,075,280 | Oct. 07, 1913 | H. Allen | Gearing | drill presses |
| 1,121,599 | Dec. 22, 1914 | H. Allen | Belt driving mechanism | drill presses |
