| Patents for Joseph G. Groff |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 247,558 | Sep. 27, 1881 | J.G. Groff | Circular-saw guard | woodworking machine safety guards |
| 263,171 | Aug. 22, 1882 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 264,149 | Sep. 12, 1882 | J.G. Groff | Guard for circular saws | woodworking machine safety guards |
| 266,466 | Oct. 24, 1882 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 277,711 | May 15, 1883 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 278,130 | May 22, 1883 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 284,199 | Sep. 04, 1883 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 291,187 | Jan. 01, 1884 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 307,112 | Oct. 28, 1884 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 311,486 | Feb. 03, 1885 | J.G. Groff | Saw-guard | woodworking machine safety guards |
| 323,318 | Jul. 28, 1885 | J.G. Groff | Saw-guard | woodworking machine safety guards |
