| Patents Granted on 1881-09-?? |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| CA-13,359 | Sep. 02, 1881 | H. McKenzie | Improvements on spark arresters | spark arresters |
| RE9,857 | Sep. 06, 1881 | W.H. Guild, Jr. | Valve Action of Duplex Engines and Pumps | steam engine valves |
| 246,618 | Sep. 06, 1881 | T.P. Langley | Faucet | auxiliary wrenches |
| 246,703 | Sep. 06, 1881 | E.C. Atkins | Detachable saw-tooth | insertable saw teeth |
| 246,710 | Sep. 06, 1881 | G.W. Bean | Back-gear clutch for upright drills | industrial machine clutches |
| 246,722 | Sep. 06, 1881 | T.L. Carley | Head-block for saw-mills | sawmill headblocks |
| 246,742 | Sep. 06, 1881 | W.O. Foster | Doubletree and Tongue For Vehicles | auxiliary wrenches |
| 246,831 | Sep. 06, 1881 | J.R. Martin, C.W. Spickerman | Adjustable Siding Square or Hook | clapboard markers |
| 246,840 | Sep. 06, 1881 | J.M. Trackwell | Wood-boring machine | portable timber borers |
| 246,858 | Sep. 13, 1881 | J. Aitchison | Relief Valve for Steam Engines | steam engines |
| 246,868 | Sep. 13, 1881 | L.T. Cornell | Cartridge Capping and Uncapping Implement | |
| 246,903 | Sep. 13, 1881 | T.G. Morse | Metal Turning Lathe | metal lathes |
| 246,904 | Sep. 13, 1881 | O. Peck | Bit-stock | brace chucks |
| 246,933 | Sep. 13, 1881 | S.L. Worsley | Machine for Feeding Screw Blanks | metal threading machines |
| 246,952 | Sep. 13, 1881 | B. Holly | Steam Pressure Regulator | steam heating |
