| Patents Granted on 1869-04-13 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| RE3,365 | Apr. 13, 1869 | W.A. Ives | Improvement in Hollow Augers | hollow bits |
| 88,767 | Apr. 13, 1869 | J.B. Atwater | Motive Power | hot air engines |
| 88,821 | Apr. 13, 1869 | M. Sweet | Improvement in boring-machines | wood drilling and boring |
| 88,833 | Apr. 13, 1869 | T.E. Barrow | Gage for Marking Bevels or Curves | bevel marking gauges |
| 88,834 | Apr. 13, 1869 | J.D. Beck | Improved Vise | bench vises |
| 88,836 | Apr. 13, 1869 | J.S. Birch | Improvement in Self-Adjusting Watch-Keys | self-adjust wrenches |
| 88,848 | Apr. 13, 1869 | J. Charlton | Improvement in Wrenches | screw adjust wrenches |
| 88,885 | Apr. 13, 1869 | J.L. Mason | Screw Forming Machine | metal swaging machines |
| 88,893 | Apr. 13, 1869 | C.G. Miller | Improvement in saw-filing machines | saw sharpening machines |
| 88,929 | Apr. 13, 1869 | G. Westinghouse, Jr. | Improvement in steam-power-brake devices | railroad car brakes |
| 88,943 | Apr. 13, 1869 | M. Chase, Jr., H.J. Morton | Improvement in shingle-machines | shingle machines |
| 88,949 | Apr. 13, 1869 | J.E. Emerson | Improvement in circular saws | saw teeth |
| 88,972 | Apr. 13, 1869 | E. May | Sheet Metal Lath Machine | lath making machines |
| 88,980 | Apr. 13, 1869 | T.T. Prosser | Improved power-hammer | drop hammers |
| 88,981 | Apr. 13, 1869 | T.T. Prosser | Improvement in machines for heading bolts | |
