| All Patents in class 403/314 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 64,292 | Apr. 30, 1867 | J.W. Douglas | Improvement in hose-couplings | household hand pumps |
| 65,183 | May 28, 1867 | W.H. Doane, J. Richards | Improvement in shaft-coupling | industrial machine shaft couplings |
| 122,426 | Jan. 02, 1872 | M.L. Andrew | Improvement in shaft-couplings | industrial machine shaft couplings |
| 174,177 | Feb. 29, 1876 | H. Albrecht | Improvement in shaft-couplings | industrial machine shaft couplings |
| 227,980 | May 25, 1880 | H. Kline | Shaft-coupling | industrial machine shaft couplings |
| 655,136 | Jul. 31, 1900 | T.F. Vandergrift | Shaft Coupling | industrial machine shaft couplings |
| 1,273,724 | Jul. 23, 1918 | J.D. Boughner | Drill Rod Connection | |
| 1,393,064 | Oct. 11, 1921 | A.C. Woodward | Shaft-coupling | industrial machine shaft couplings |
