| All Patents in class 33/201 |
Patents 1 -
10
of 31
      |
| Picture | Number | Date | Patentee | Title |
 | 51,248 | Nov. 28, 1865 | W.C. Wells | Drill Gage |
 | 76,123 | Mar. 31, 1868 | W.C. Wells | Drill Gage |
 | 139,487 | Jun. 03, 1873 | A.C. Trafton | Drill Gage |
| | 303,368 | Aug. 12, 1884 | A.G. Goldthwait | Drill Gage |
 | 310,420 | Jan. 06, 1885 | A.J. Hellings | Combination Gage |
| | 403,175 | May 14, 1889 | A.F. Brewer | Gage for Grinding Twist or Flat Drills |
| | 403,740 | May 21, 1889 | I. Culver | Drill Gage |
 | 447,475 | Mar. 03, 1891 | B.H. Pomeroy | Drill and Tap Scale |
 | 465,397 | Dec. 15, 1891 | N.B. Taylor | Machinist's Gage |
 | 494,169 | Mar. 28, 1893 | O.W. Schaum | Combination Gage |
