| Patents for Katherine Holt |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 1,035,974 | Aug. 20, 1912 | E.N. Kraemer | Valve Spring Releaser and Retainer | valve spring tools |
| 1,088,284 | Feb. 24, 1914 | H.H. Jones | Hacksaw-machine | metal sawing machines |
| 1,091,773 | Mar. 31, 1914 | W.S. Sherman | End-matcher | matchers |
| 1,102,695 | Jul. 07, 1914 | W.S. Sherman | Boring-machine | wood drilling and boring |
| 1,131,260 | Mar. 09, 1915 | A. Nydegger | Plaster-mixer | |
| 1,147,804 | Jul. 27, 1915 | E.N. Kraemer | Valve Spring Remover | valve spring tools |
| 1,153,618 | Sep. 14, 1915 | J. Goetz | Arm for milling-machines | milling machines |
| 1,271,233 | Jul. 02, 1918 | W.S. Sherman | Saw Mounting | circular saws |
