| Patents for Harold Fletcher Massey |
Patents 1 -
15
of 25
      |
| Number | Date | Patentee | Title | Type |
| GB-189,723,749 | Sep. 03, 1898 | H.F. Massey | Improvements in power-hammers | drop hammers |
| GB-190,014,022 | Jul. 27, 1901 | H.F. Massey | Improvements in pneumatic power-hammers | drop hammers |
| 707,246 | Aug. 19, 1902 | H.F. Massey | Pneumatic power-hammer | power hammers |
| GB-190,215,472 | Jul. 11, 1903 | H.F. Massey | Improvements in lifting or pulling mechanism for use in or in connection with drop-stamps or hammers or other machines, or devices | drop hammers |
| GB-190,410,764 | Apr. 13, 1905 | H.F. Massey | Improvements in pneumatic power-hammers | drop hammers |
| GB-190,411,956 | May 04, 1905 | W.H. Snow, H.F. Massey | Improvements in pneumatic-power-hammers | drop hammers |
| GB-190,504,604 | Feb. 15, 1906 | H.F. Massey, L.F. Massey | Improvements in pneumatic power-hammers | drop hammers |
| 829,594 | Aug. 28, 1906 | H.F. Massey | Drop hammer or stamp | drop hammers |
| GB-190,612,859 | May 02, 1907 | H.F. Massey | Improvements in power-driven olivers or helve-hammers and analogous hammers | drop hammers |
| GB-190,626,452 | Oct. 17, 1907 | H.F. Massey, L.F. Massey | Improvements in hammers and stamps worked by elastic fluids under pressure | drop hammers |
| GB-190,626,137 | Nov. 07, 1907 | W.H. Snow, H.F. Massey | Improvements in pneumatic power-hammers and like tools | drop hammers |
| GB-190,626,138 | Nov. 19, 1907 | W.H. Snow, H.F. Massey | Improvements in steam-hammers and other hammers and stamps worked by elastic fluids supplied under pressure | drop hammers |
| GB-190,719,747 | Sep. 03, 1908 | H.F. Massey | Improvements in power-hammers and the like | drop hammers |
| GB-190,800,449 | Jan. 07, 1909 | H.F. Massey | Improvements in and relating to hammers and other machines and air-compressors for driving them | drop hammers |
| GB-190,929,316 | Oct. 27, 1910 | W.H. Snow, H.F. Massey | Improvements in hammers worked by elastic fluid | drop hammers |
