| All Patents in class 33/25.1 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 17,647 | Jun. 23, 1857 | C. Thurber | Calligraph | |
| 30,777 | Nov. 27, 1860 | C. Thurber | Caligraphy | |
| 364,043 | May 31, 1887 | C.S. Riché | Pantograph | pantographs |
| 2,274,543 | Feb. 24, 1942 | I.J. Gruenberg | Trimming mechanism for grinder wheels | grinder dressers |
| 2,452,509 | Oct. 26, 1948 | J.R. Moore, F.C. Victory | Wheel Truing Device | wheel truing devices |
| 2,555,852 | Jun. 05, 1951 | F.E. Hawley | Wheel Dressing Means | wheel truing devices |
| 2,627,658 | Feb. 10, 1953 | E.T. Green | Engraving Machine | metal engraving machines |
