| All Patents in class 148 |
Patents 16 -
30
of 46
      |
| Number | Date | Patentee | Title | Type |
| 86,286 | Jan. 26, 1869 | H. Disston | Improvement in Device for Simultaneously Hardening and Straightening Circular-Saw Blades | tool making machines |
| 88,002 | Mar. 23, 1869 | G. Atkins | Improvement in the Manufacturing of Sheet Iron | tool making machines |
| 88,585 | Apr. 06, 1869 | G.H. Porter | Improved Process of hardening Steel | |
| 125,650 | Apr. 09, 1872 | J.A. Woodbury | Improvement in Tempering Steel Railrod Rails | track and switches |
| 140,390 | Jul. 01, 1873 | L.W. Stuart | Improvement in Process of Hardening Edge Tools | |
| 150,625 | May 05, 1874 | J.A. Ferson, G.F. Simonds | Tempering and Forming Articles of Steel | tool making machines |
| 153,115 | Jul. 14, 1874 | I.J. Robinson | Improvement in processes for tempering the blades of squares | carpenter squares |
| 157,566 | Dec. 08, 1874 | L. Bailey | Improvement in Hardening the Blades of Squares | squares |
| RE7,464 | Jan. 16, 1877 | G.F. Simonds | Improvement in Tempering and Forming Article of Steel | tool making machines |
| RE7,465 | Jan. 16, 1877 | G.F. Simonds | Improvement in Tempering and Forming Article of Steel | tool making machines |
| 237,915 | Feb. 15, 1881 | G.F. Simonds | Methd of correcting unequal tension in circular saws | tool making machines |
| 255,725 | Mar. 28, 1882 | C.M. Daboll | Hardening metals | industrial machine pulleys and belt drive mechanisms |
| 324,600 | Aug. 18, 1885 | C.T. Shoemaker | Manufacture of Saws | |
| 402,947 | May 07, 1889 | W.W. Lee | Art of Welding | |
| 878,463 | Feb. 04, 1908 | F. Hanaman, A. Just | Process of Manufacturing Incandescent Bodies for Electric Lamps | incandescent light bulbs |
