| All Patents in class 148/588 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 52,450 | Feb. 06, 1866 | J. Russell | Process of Hardening Files | files |
| 67,734 | Aug. 13, 1867 | H. Disston | Improvement in Hardening and Straightening Steel Blades | tool making machines |
| 86,286 | Jan. 26, 1869 | H. Disston | Improvement in Device for Simultaneously Hardening and Straightening Circular-Saw Blades | tool making machines |
| 140,390 | Jul. 01, 1873 | L.W. Stuart | Improvement in Process of Hardening Edge Tools | |
| 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 |
| 324,600 | Aug. 18, 1885 | C.T. Shoemaker | Manufacture of Saws | |
| 1,265,944 | May 14, 1918 | C. Napier | Process of and Apparatus for Heat Treatment of Metal Objects | heat treating machines |
| 1,333,767 | Mar. 16, 1920 | C. Napier | Method of making tempered blades | making sawblades |
| 2,312,839 | Mar. 02, 1943 | T.A. Waltz, A. Kullman | Flame Hardening Of Rack Bars | heat treating machines |
| 2,361,995 | Nov. 07, 1944 | F.W. Curtis | Method of Making Metal Cutting Tools | milling machine cutters |
| 2,786,788 | Mar. 26, 1957 | W.T. Anderson | High speed tool steel saw band and method of making the same | sawblades |
