| Patents for James H. Layman |
Patents 91 -
102
of 102
      |
| Number | Date | Patentee | Title | Type |
| 421,297 | Feb. 11, 1890 | J. Mills | Adjustable Crank Pin | metal shapers |
| 434,091 | Aug. 12, 1890 | S. Rust | Mallet | mallets |
| 450,965 | Apr. 21, 1891 | E.S. Matthews | Elevator-valve controller | |
| 463,320 | Nov. 17, 1891 | J. Powell | Lubricator | steam engine lubricators |
| 481,238 | Aug. 23, 1892 | A. Muehlmatt | Engraver's block | |
| 490,670 | Jan. 31, 1893 | A.S. Smith, J. Mills | Metal Shaping Machine | metal shapers |
| 497,809 | May 23, 1893 | A. Muehlmatt | Machine for bending stud-spirals | |
| 533,991 | Feb. 12, 1895 | J.H. Layman | Straightway Valve | valves |
| 534,006 | Feb. 12, 1895 | J. Powell | Lubricator | steam engine lubricators |
| 604,265 | May 17, 1898 | J. Powell | Lubricator | oil pumps |
| 610,412 | Sep. 06, 1898 | J. Powell | Straightway Valve | valves |
| 614,967 | Nov. 29, 1898 | J. Mills | Crank Planer and Metal Shaper | metal shapers |
