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| All Patents in class 409/314 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 497,997 | May 23, 1893 | J.T. Wilkin | Machine for Planing Cyclodal Surfaces | ||
| 497,998 | May 23, 1893 | J.T. Wilkin | Machine for Forming Cyclodal Surfaces | ||
| 509,086 | Nov. 21, 1893 | E.D. Johnston | Planing Machine for Blower Pistons | ||
| 533,025 | Jan. 22, 1895 | J.H. Morrison, W.W. Wainright | Device for Producing Cyclodal Curves | ||
| 534,827 | Feb. 26, 1895 | T.W. Green | Attachment for Metal Planing Machines | ||