| Patents Granted on 1873-03-25 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| RE5,335 | Mar. 25, 1873 | J. Hendy | Double friction-coupling | industrial machine clutches |
| 137,052 | Mar. 25, 1873 | L. Chapman | Improvement in Dies for Forming Wrench-Heads | tool making machines |
| 137,053 | Mar. 25, 1873 | L. Chapman | Improvements in the Manufacture of Wrench-Heads | wrench jaw components |
| 137,079 | Mar. 25, 1873 | J.L. Knowlton | Improvement in car-brakes | railroad car brakes |
| 137,129 | Mar. 25, 1873 | S.B. Dexter | Combined Wrenches and Grappling Tools | self-adjust wrenches |
| 137,136 | Mar. 25, 1873 | J.T. Hawkins | Improvement in machines for making spool-blanks | spool or bobbin machines |
| 137,147 | Mar. 25, 1873 | C.W. Priest | Machines for Beading Sheet Metal Vessels | beading machines |
| 137,171 | Mar. 25, 1873 | B.A. Bloch | Hydraulic Motors | hydraulic motors |
| 137,172 | Mar. 25, 1873 | G. Blythe | Improvement in saw-filing machines | saw sharpening machines |
| 137,258 | Mar. 25, 1873 | T. Stockmarr | Improvement in fluting-machines | wood shapers |
| 137,261 | Mar. 25, 1873 | H. Taylor | Rotary Steam Engines | rotary steam engines |
| 137,262 | Mar. 25, 1873 | G.H. Van Vleck | Counting Register | |
