| Patents for Robert H. Porter |
Patents 1 -
10
of 22
      |
| Picture | Number | Date | Patentee | Title |
 | 281,762 | Jul. 24, 1883 | A.F. Griswold | Facing for saw-mill head-blocks |
 | 284,997 | Sep. 18, 1883 | J.O. Barrett | Bench Vise |
 | 286,354 | Oct. 09, 1883 | W.M. Wilkin | Saw-buckle for reciprocating saws |
 | 286,356 | Oct. 09, 1883 | W.M. Wilkin | Saw-relief mechanism for saw-mills |
 | 286,357 | Oct. 09, 1883 | W.M. Wilkin | Feed mechanism for saw-mills |
 | 286,990 | Oct. 23, 1883 | J.O. Barrett | Bench Vise |
 | 291,820 | Jan. 08, 1884 | E. Walker | Chisel Handle/Plane |
 | 301,472 | Jul. 08, 1884 | H.R. Barnhurst | Saw-mill head-block |
| | 304,983 | Sep. 09, 1884 | W.M. Wilkin | Gang-saw mill |
 | 327,574 | Oct. 06, 1885 | J.S. Miller | Band-saw mill |
