| Patents Granted on 1881-05-17 |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 241,480 | May 17, 1881 | J. Enright | Steam Boiler Furnace | stationary boilers |
| 241,481 | May 17, 1881 | L.R. Faught | Boring-bar | drill bits |
| 241,482 | May 17, 1881 | L.R. Faught | Boring-bar | drill bits |
| 241,483 | May 17, 1881 | L.R. Faught | Machine for boring metal | drill presses |
| 241,488 | May 17, 1881 | H. Eberhardt, U. Eberhardt, E. Gould | Adjustable crank-pin | metalworking machine mechanisms |
| 241,490 | May 17, 1881 | J.T. Hayden | Pipe Wrench | pipe wrenches |
| 241,497 | May 17, 1881 | S. Lawton | Machine for Holding Milling Tools for Grinding | grinding attachments |
| 241,552 | May 17, 1881 | J. Lee | Wrench | quick adjust wrenches |
| 241,555 | May 17, 1881 | P. Medart | Belt-pulley | industrial machine pulleys and belt drive mechanisms |
| 241,562 | May 17, 1881 | E.E. Pierce | Machine for Making Horseshoe Nails | horseshoe nail making machines |
| 241,563 | May 17, 1881 | F.A. Pratt | Metal-planing machine | metal planers |
| 241,633 | May 17, 1881 | W. Dunn | Saw-set | saw sets |
| 241,674 | May 17, 1881 | W.T. Kosinski | Pipe Wrench | chain and strap wrenches |
| 241,695 | May 17, 1881 | A. Muir | Milling-cutter | milling machine cutters |
| 241,699 | May 17, 1881 | G.W. Nichols | Gang-saw mill | reciprocating sawmills |
