| All Patents in class 409/903 |
Patents 16 -
30
of 37
      |
| Number | Date | Patentee | Title | Type |
| 1,595,691 | Aug. 10, 1926 | F.L. Simmons | Terminal Block for Magnetic Chucks and the Like | magnetic chuck accessories |
| 1,624,609 | Apr. 12, 1927 | H.C. Maise | Jig | miter and corner clamps |
| 1,628,618 | May 10, 1927 | H.K. Spencer | Means For Handling Articles | grinding attachments |
| 1,685,572 | Sep. 25, 1928 | O. Onsrud | Woodworking machine | wood shapers |
| 1,690,541 | Nov. 06, 1928 | A.R. Kuzelewski | Fluid or air controlling and operating device for machine tools or the like | metalworking machine mechanisms |
| 1,761,351 | Jun. 03, 1930 | J.J. Kutscheid | Holddown for squaring shears | metal shearing machines |
| 1,772,082 | Aug. 05, 1930 | J.H. Hoern | Device for Assembling and Holding Piston Rings for Machining Operations | metalworking machine mechanisms |
| 1,802,914 | Apr. 28, 1931 | C.W. Gruber | V Block | V blocks |
| 1,815,414 | Jul. 21, 1931 | R.W. Lord | Strap Clamp and Block | vises |
| 1,872,564 | Aug. 16, 1932 | E.B. Stimpson | Slotting machine | |
| 1,909,681 | May 16, 1933 | P.S. Jackson | Workholder for machine tools | |
| 1,947,957 | Feb. 20, 1934 | J.R. Tillman | Workholder | |
| 1,994,422 | Mar. 12, 1935 | J.R. Sasek | V-block and clamp | clamps |
| 2,053,177 | Sep. 01, 1936 | W.L. Bower | Work holder | magnetic chucks |
| 2,129,485 | Sep. 06, 1938 | H.W. Zimmerman | Boring machine | boring and turning machines |
