| Patents for C. Spengel |
Patents 16 -
24
of 24
      |
| Number | Date | Patentee | Title | Type |
| 887,783 | May 19, 1908 | C.E. Francis | Veneer-press | veneer machines |
| 893,875 | Jul. 21, 1908 | F. Schneider | Drill Press Chuck | chucks |
| 940,823 | Nov. 23, 1909 | A.B. Probasco | Tool for Forming Wire-Joints | wire twisters |
| 946,032 | Jan. 11, 1910 | W.A. Greaves | Gage | tablesaw accessories |
| 1,017,859 | Feb. 20, 1912 | H. Dreses | Stop mechanism for turret-lathes | turret lathes |
| 1,031,396 | Jul. 02, 1912 | J.M. Tatman | Gearing for lathes | metal lathes |
| 1,063,665 | Jun. 03, 1913 | H. Dreses, E.J. Spaeth | Automatic tool stop | drill presses |
| 1,095,828 | May 05, 1914 | H. Dreses, E.J. Spaeth | Radial drill | radial drill presses |
| 1,195,861 | Aug. 22, 1916 | E.F. Smith | Manufacture and construction of commutators | handheld power tools |
