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| All Patents in class 74/814 | |||||
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| Number | Date | Patentee | Title | Type | |
| 531,817 | Jan. 01, 1895 | H.C. Warren | Precision-index | indexers and dividers | |
| 991,886 | May 09, 1911 | J. Johnston, J.C. Potter | Turret Lathe | turret lathes | |
| 2,369,209 | Feb. 13, 1945 | E.P. Bullard, E.N. Cowell, P.H. Lange | Turrethead Locking Means | turret lathes | |
| 2,888,843 | Jun. 02, 1959 | J.C. Hollis | Machine Tool Turret With Bidirectional Coupling | tool changers and storage mechanisms | |
| 3,406,595 | Oct. 22, 1968 | L.C. Tullis | Index Unit | indexers and dividers | |