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| Patents for John Day Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 794,354 | Jul. 11, 1905 | G.M. Hinkley | Timber-transferring machine | |
 | 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 | |
 | 834,788 | Oct. 30, 1906 | J. Wilson | Steam-turbine | |
 | 835,712 | Nov. 13, 1906 | J.F. Patitz | Valve for blowing-engines | |
 | 923,591 | Jun. 01, 1909 | C.G. Sprado | Gas Engine | |