| Patents Granted on 1851-05-?? |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 8,075 | May 06, 1851 | N. Goodyear | Improvement in the Manufacture of India-Rubber | pocket and protected cork extractors |
| 8,080 | May 06, 1851 | J. Gorrie | Improved Process for the Artificial Production of Ice | refrigeration apparatus |
| AI97 | May 13, 1851 | J. O'Neil | Atmospheric churn | |
| RE200 | May 13, 1851 | G.H. Corliss | Improvements in Cut-Off and Working the Valves of Steam Engines | steam engines |
| 8,086 | May 13, 1851 | R. Bixby, C.S. Bixby, J. Garst | Planing-machine | wood planers |
| 8,098 | May 20, 1851 | G.W. Beardslee | Planing-machine | wood planers |
| XC-323 | May 21, 1851 | C. Shattuck | Cross cutting machine | crosscut saws |
| 8,113 | May 27, 1851 | G.W. Putnam | Vise-jaw for saw-filing machinery | saw sharpening machines |
| 8,115 | May 27, 1851 | H. Waterman | Machinery for hardening and straightening saws, &c. | making sawblades |
| 8,125 | May 27, 1851 | N. Barlow | Planing-machine | wood planers |
