| All Patents in class D15/139 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 20,192 | May 11, 1858 | W.A. Clark | Method of seating the movable cutter in expansive bits | adjustable drill bits |
| 124,089 | Feb. 27, 1872 | H.S. Shepardson | Improvement in bits | drill bits |
| 155,333 | Sep. 22, 1874 | W.L. Parmelee | Improvement in expansion-bits | adjustable drill bits |
| D21,850 | Sep. 06, 1892 | J. Roberts | Design for a cutter-head hood for planers | wood planers |
| 879,309 | Feb. 18, 1908 | E. Pastore | Expansible bit | adjustable drill bits |
| 1,004,572 | Oct. 03, 1911 | A.L. Jennings | Auger-bit | adjustable drill bits |
| 1,461,376 | Jul. 10, 1923 | F.A. Bartlett | Cutting bur | handheld power tool accessories |
| D191,308 | Sep. 12, 1961 | E.M. Key | Splitter knife | tablesaw accessories |
| 3,021,733 | Feb. 20, 1962 | S.A. Cogsdill | Cutting Tool | boring heads |
| 3,518,737 | Jul. 07, 1970 | R.J. Hood | Cutting Tool | insert tool holders |
| D220,920 | Jun. 15, 1971 | B.L. Cochran | Double End Cutting Insert | lathe tools |
| 4,074,737 | Feb. 21, 1978 | J.S. Stewart | Wood planer cutterhead design for reduced noise level | cutterheads |
| D279,477 | Jul. 02, 1985 | M.B. Mittleman | Adjustable Hole Cutter for Use fith Interchangeable Arbors | drill press accessories |
| D283,712 | May 06, 1986 | M.D. Mittleman | Adjustable Hole Cutter Housing | drill press accessories |
