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| All Patents in class 226/162 | |||||
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| Number | Date | Patentee | Title | Type | |
| 629,161 | Jul. 18, 1899 | J. Hartness | Stock Feeding Mechanism for Screw Machines | workpiece changers and storage mechanisms | |
| 2,576,114 | Nov. 27, 1951 | H.M. Junkin, Executor, R.L. Hibbard, Executor, Jr., S.C. Hibbard, Executor, R.L. Hibbard, deceased (Estate of) | Machine Tool Work Holder | workpiece changers and storage mechanisms | |