| Patents for Pratt, Read & Co. |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 156,498 | Nov. 03, 1874 | M. Pratt | Improvement in machines for trimming keys of musical instruments | music instrument maker |
| 162,417 | Apr. 20, 1875 | M. Pratt | Improvement in devices for shaping piano-keys | wood shapers |
| 162,987 | May 04, 1875 | S.H. Wilder | Mortising machine for piano buttons | mortising machines |
| RE6,455 | May 25, 1875 | M. Pratt | Improvement in machines for trimming keys of musical instruments | specialty woodworking machines |
| 168,696 | Oct. 11, 1875 | M.G. Wilder, S.H. Wilder, W.H. McNeil, H.C. Tyler | Improvement in mortising machines | mortising machines |
| 168,862 | Oct. 19, 1875 | M.G. Wilder, W.H. McNeil, H.C. Tyler | Improvement in boring-machines | drilling and boring |
| 182,224 | Sep. 12, 1876 | C.W. Pratt | Improvement in power hand-drill stocks | hand drills |
| 195,902 | Oct. 09, 1877 | M. Pratt | Improvement in machines for smoothing ivory key-boards | music instrument maker |
| 195,911 | Oct. 09, 1877 | M.G. Wilder, W.H. McNeil | Improvement in machines for dressing piano-keys | music instrument maker |
