| All Patents in class 294/100 |
Patents 1 -
5
of 5
      |
| Number | Date | Patentee | Title | Type |
| 333,452 | Dec. 29, 1885 | T.S. Disston | Post Hole Digger | |
| 855,280 | May 28, 1907 | V.E. Campbell | Interchangeable and Adjustable Screw Driver and Combined Tool Holder | tool holders |
| 2,207,649 | Jul. 09, 1940 | S. Ackal, J.H. Williams | Oil Well Fishing Tool | |
| 2,320,967 | Jun. 01, 1943 | M.S. Dunkelberger | Mechanical finger gripping device | |
| 4,173,368 | Nov. 06, 1979 | P.J. Haverbusch | Apparatus for Frictionally Gripping the Interior Surface of a Container During Handling by an Article Transferring Means | material gripping machines |
