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| Patents for A. D. Harrison | |||||
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| Number | Date | Patentee | Title | Type | |
| 352,070 | Nov. 02, 1886 | A.R. Robertson | Magnetic Tack-Hammer | tack hammers | |
| 377,448 | Feb. 07, 1888 | J.O. Brown | Tree-protector | ||
| 389,792 | Sep. 18, 1888 | C.A. Chandler | Vise | woodworkers vises | |
| 396,513 | Jan. 22, 1889 | J.A. Saucier | Planing-machine | wood planers | |
| 406,815 | Jul. 09, 1889 | C.A. Chandler | Vise | bench vises | |
| 413,961 | Oct. 29, 1889 | D.R. Porter | Pipe Wrench | pipe wrenches | |
| 421,598 | Feb. 18, 1890 | J. Monto | Pliers | pliers | |
| 426,956 | Apr. 29, 1890 | D.R. Porter | Improved Pipe Wrench | pipe wrenches | |
| 431,422 | Jul. 01, 1890 | J. Watrous | Pencil-sharpener | pencil sharpeners | |
| 432,791 | Jul. 22, 1890 | D.H. Church | Lathe for Turning Pinion Shafts | watchmakers lathes | |
| CA-35,548 | Dec. 02, 1890 | D.R. Porter | Wrench | pipe wrenches | |
| 441,834 | Dec. 02, 1890 | J.L. Freeman | Tool Holder | metal lathes | |
| 445,382 | Jan. 27, 1891 | O. Sawyer | Belt guide and support | belt sanders | |
| 450,681 | Apr. 21, 1891 | D.R. Porter | Wrench | pipe wrenches | |
| 450,823 | Apr. 21, 1891 | C.W. Fuller | Bevel | bevels | |