| All Patents in class 266 |
Patents 16 -
30
of 72
      |
| Number | Date | Patentee | Title | Type |
| 70,755 | Nov. 12, 1867 | J. Small | Machine for Tempering Saws, Files, etc. | files |
| 125,650 | Apr. 09, 1872 | J.A. Woodbury | Improvement in Tempering Steel Railrod Rails | track and switches |
| 125,651 | Apr. 09, 1872 | J.A. Woodbury | Tempering the Treads of Car Wheels | railroad car wheels |
| 150,289 | Apr. 28, 1874 | W. Clemson | Improvement in apparatus for tempering saws | making sawblades |
| 153,115 | Jul. 14, 1874 | I.J. Robinson | Improvement in processes for tempering the blades of squares | carpenter squares |
| 343,358 | Jun. 08, 1886 | W.B. Barry | Apparatus for tempering saws | tool making machines |
| 348,888 | Sep. 07, 1886 | J.M. Chambers | Apparatus for Heating and Drying Barrels | barrel making machines |
| 385,347 | Jul. 03, 1888 | J.G. Folsom | Metal Hardening Device | heat treating machines |
| 453,162 | May 26, 1891 | E.E. Ries | Apparatus for Hardening and Tempering Steel and Iron | heat treating machines |
| 482,001 | Sep. 06, 1892 | B. Brazelle | Process of and apparatus for purifying, refining, and carburizing metals | |
| 507,538 | Oct. 31, 1893 | B. Lilienfeld, D. Grove | Coffee Roaster | coffee roasters |
| 529,476 | Nov. 20, 1894 | B. Brazelle | Process of and apparatus for smelting ores | |
| 988,950 | Apr. 04, 1911 | J. Rossel | Skirt-Board Scriber | scribes |
| 1,150,512 | Aug. 17, 1915 | J.H. Fryer | Apparatus for annealing malleable-iron castings | foundryman |
| 1,221,576 | Apr. 03, 1917 | C. Napier | Manufacture of tempered saw-blades | making sawblades |
