| Patents for John Day Jr. |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 794,354 | Jul. 11, 1905 | G.M. Hinkley | Timber-transferring machine | woodworking machine material handling |
| 815,312 | Mar. 13, 1906 | C.G. Sprado | Adjustable piston-rod and cross-head connection | |
| 831,982 | Sep. 25, 1906 | J.F. Patitz | Valve for blowing-engines | air compressors |
| 834,788 | Oct. 30, 1906 | J. Wilson | Steam-turbine | rotary steam engines |
| 835,712 | Nov. 13, 1906 | J.F. Patitz | Valve for blowing-engines | air compressors |
| 923,591 | Jun. 01, 1909 | C.G. Sprado | Gas Engine | internal combustion engine governors |
