| Patents Granted on 1881-02-15 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| RE9,574 | Feb. 15, 1881 | W.H. Doane | Matching machine | wood planers |
| 237,713 | Feb. 15, 1881 | H.F. Willson | Carriage-bow | coaches and carriages |
| 237,716 | Feb. 15, 1881 | J. Absterdam | Apparatus for oiling and lubricating the bearings and cylinders of steam-engines | steam engine lubricators |
| 237,722 | Feb. 15, 1881 | H. Bickford | Feed device for drilling-machines | drill presses |
| 237,764 | Feb. 15, 1881 | E. Medden | Rotary pump | rotary pumps |
| 237,780 | Feb. 15, 1881 | N.N. Spofford | Bit-stock | braces |
| 237,784 | Feb. 15, 1881 | E.V. Tanner | Machine for Grinding Plug Valves | valve grinding tools |
| 237,799 | Feb. 15, 1881 | G.W. Atkins | Saw-Set | saw sets |
| 237,824 | Feb. 15, 1881 | W.H. Cummings | Sulky Plow | plows |
| 237,833 | Feb. 15, 1881 | W.H. Doane | Pulley | industrial machine pulleys and belt drive mechanisms |
| 237,872 | Feb. 15, 1881 | W.R. Jenkins, Jr. | Power Hammer | power hammers |
| 237,895 | Feb. 15, 1881 | H. Owens | Coffee Roaster | coffee roasters |
| 237,907 | Feb. 15, 1881 | H.S. Rogers | Boot & Shoe Shave & Bead Cutter | cobbler |
| 237,912 | Feb. 15, 1881 | F. Schaefle | Scroll-saw | scrollsaws |
| 237,915 | Feb. 15, 1881 | G.F. Simonds | Methd of correcting unequal tension in circular saws | tool making machines |
