| All Patents in class 408/202 |
Patents 31 -
45
of 55
      |
| Number | Date | Patentee | Title | Type |
| 548,385 | Oct. 22, 1895 | F.W. Nelson | Auger Bit with Detachable Tip | auger bits |
| 554,443 | Feb. 11, 1896 | J.H. Henry | Countersinking-Bit | countersinks |
| 559,372 | May 05, 1896 | C. Elterich | Tap | taps and dies |
| 569,896 | Oct. 20, 1896 | E. Van Cauwenberg | Bit gage | drill depth stops |
| 585,456 | Jun. 29, 1897 | G.W. Weiss | Drill Depth Stop | drill depth stops |
| 631,572 | Aug. 22, 1899 | L. Judson | Countersink Attachment | countersinks |
| 679,693 | Jul. 30, 1901 | W. Burkhart | Combined Drill and Countersink | countersinks |
| 716,441 | Dec. 23, 1902 | G.W. Latham | Tapered Twist Drill | twist drill bits |
| 762,673 | Jun. 14, 1904 | G. Arnold | Comabination Marking/Drill Gage | drill depth stops |
| 772,211 | Oct. 11, 1904 | A.D. Campbell | Bit gage | |
| 803,939 | Nov. 07, 1905 | E.J. Tiede | Depth-Gage for Brace-Bits | drill depth stops |
| 832,444 | Oct. 02, 1906 | G. Arnold | Gage | drill depth stops |
| 873,712 | Dec. 17, 1907 | F. Buck | Tape measure | tape measures |
| 922,808 | May 25, 1909 | W.J. Parsons | Bit-gage | |
| 995,178 | Jun. 13, 1911 | W. Potter | Boring-Machine alarm | drill depth stops |
