| All Patents in class 74/613 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 112,504 | Mar. 07, 1871 | G.W. Shipman | Improvement in guards for circular saws | woodworking machine safety guards |
| 976,181 | Nov. 22, 1910 | J.M. Jones | Safety-guard for stamping-machines | stamping presses |
| 1,696,636 | Dec. 25, 1928 | H.L. Johnston | Grinding apparatus | |
| 1,906,778 | May 02, 1933 | J.P. Udal | Guard for presses and other like machines | metalworking machine safety guards |
| 2,860,525 | Nov. 18, 1958 | J.A. Breadner | Guard for drop hammers or presses | drop hammers |
| 4,373,406 | Feb. 15, 1983 | T.W. Piotrowski | Full Access Pallet Shuttle Guarding | workpiece changers and storage mechanisms |
