| All Patents in class 451/449 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 29,680 | Aug. 21, 1860 | H. Disston | Machine for grinding saw-blades | tool making machines |
| 233,488 | Oct. 19, 1880 | S. Darling | Art of Manufacturing Mathematical Instruments | |
| 411,729 | Sep. 24, 1889 | W.J. Perkins | Saw-grinding machine | saw sharpening machines |
| 1,036,783 | Aug. 27, 1912 | E.J. Bein | Abrasive apparatus | sanding machines |
| 2,562,229 | Jul. 31, 1951 | R.M. Bell | Belt grinding machine | sanding machines |
| 2,935,824 | May 10, 1960 | P.J. Robischung | Machine tool | |
| 3,448,023 | Jun. 03, 1969 | R.M. Bell | Belt type electro-chemical (or electrolytic) grinding machine | |
| 4,664,165 | May 12, 1987 | J.W. Mauger, H. Pollak | Surface mounted power tool | jointers |
| D299,146 | Dec. 27, 1988 | H. Pollak, J.W. Mauger | Surface mounted power tool | jointers |
