| All Patents in class 144/27 |
Patents 16 -
30
of 36
      |
| Number | Date | Patentee | Title | Type |
| 992,500 | May 16, 1911 | A.A. Harvie | Mortising and Centering Device | drill accessories |
| 1,005,336 | Oct. 10, 1911 | F.E. Sherwood | Hinge-mortising device | mortising machines |
| 1,045,511 | Nov. 26, 1912 | J.W. Carlson | Mortise-Gage | butt gauges |
| 1,050,155 | Jan. 14, 1913 | W. Mason | Butt-gage | butt gauges |
| 1,101,516 | Jun. 30, 1914 | J.E. Ahlvin | Carpenter's Marking Device | butt gauges |
| 1,114,736 | Oct. 27, 1914 | J. Dick | Butt Gage | butt gauges |
| 1,118,570 | Nov. 24, 1914 | R.P. Nedergaard | Door-hinge marker | |
| 1,264,649 | Apr. 30, 1918 | G. Holt | Gage | butt gauges |
| 1,430,874 | Oct. 03, 1922 | N.F. Anderson | Machine for Making Door Butt Mortises | mortising machines |
| 1,524,234 | Jan. 27, 1925 | R.L. Carter | Hinge-recess gauge | butt gauges |
| 1,603,652 | Oct. 19, 1926 | J.A. Waller | Hinge Mortising Tool | butt gauges |
| 1,644,666 | Oct. 11, 1927 | R.L. Carter | Hinge-recess gauge | butt gauges |
| 1,679,074 | Jul. 31, 1928 | R.L. Carter | Template for guiding routers | handheld power tool accessories |
| 1,787,313 | Dec. 30, 1930 | J.R. Houts | Hinge-Seat Gauge | butt gauges |
| 1,879,454 | Sep. 27, 1932 | H.T. Parker | Mortising Tool | butt gauges |
