| Patents for C. Spengel |
Patents 1 -
15
of 18
      |
| Number | Date | Patentee | Title | Type |
| 541,952 | Jul. 02, 1895 | B.J. Spilker | Miter chopper | miter machines |
| 544,569 | Aug. 13, 1895 | H. Dreses | Metal Shaping Machine | |
| 595,354 | Dec. 14, 1897 | B.J. Spilker | Mixer | food and drink mixers |
| 629,899 | Aug. 01, 1899 | J.H. Flynn | Guide-pulley | drill presses |
| 655,482 | Aug. 07, 1900 | C.E. Francis | Glue-spreader | gluing machines |
| 682,810 | Sep. 17, 1901 | L.F. Parks | Gaining cutter-head | sawblades |
| 712,537 | Nov. 04, 1902 | C.S. Hisey | Electric grinding device | handheld power tools |
| 775,372 | Nov. 22, 1904 | G. Langen | Counter-shaft with changeable speed | metalworking variable speed mechanisms |
| 814,039 | Mar. 06, 1906 | H.A. Hamilton | Combinaton Tool | combination saws |
| D38,945 | Dec. 10, 1907 | E.F. Smith | Design for a housing for electric drills | handheld power drills |
| 887,783 | May 19, 1908 | C.E. Francis | Veneer-press | veneer machines |
| 893,875 | Jul. 21, 1908 | F. Schneider | Drill Press Chuck | chucks |
| 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 |
