| Patents for Robert H. Porter |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 338,124 | Mar. 16, 1886 | W.M. Wilkin | Reciprocating-saw mill | reciprocating sawmills |
| 338,125 | Mar. 16, 1886 | W.M. Wilkin | Saw-sash for reciprocating saw-mills | reciprocating sawmills |
| 338,170 | Mar. 16, 1886 | H.R. Barnhurst, A.F. Griswold | Bandsaw mill | band sawmills |
| 350,308 | Oct. 05, 1886 | J.A. Hurley | Cork-puller | bar corkscrews |
| 380,235 | Mar. 27, 1888 | W.M. Wilkin | Gang-saw mill | reciprocating sawmills |
| 384,112 | Jun. 05, 1888 | H.R. Barnhurst | Band-saw mill | band sawmills |
| 389,126 | Sep. 04, 1888 | W.M. Wilkin | Saw-hanging device for gang-saws | reciprocating sawmills |
