| Patents for John W. Hill |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 130,918 | Aug. 27, 1872 | J.W. Hill | Improvement in apparatus for closing and operating annular series of water-wheel gates |
 | 142,912 | Sep. 16, 1873 | J.W. Hill | Improvement in machines for turning wheels |
 | 159,675 | Feb. 09, 1875 | J.W. Hill | Improvement in piston-packings |
 | 160,189 | Feb. 23, 1875 | J.W. Hill | Improvement in frames for portable steam-engines |
 | 212,480 | Feb. 18, 1879 | F. Lunkenheimer | Oil-Cup |
 | 287,211 | Oct. 23, 1883 | C. Ahrens | Steam-generator |
 | 292,396 | Jan. 22, 1884 | C. Ahrens | Pump-valve |
| | 1,041,792 | Oct. 22, 1912 | J.W. Hill | Floating Tool or Tool Holder |
