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| All Patents in class 285/121.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,568,092 | Sep. 18, 1951 | G.A. Highberg, H.E. Sloan | Swivel connection for air operated chucks | metal lathe chucks | |
| 2,599,664 | Jun. 10, 1952 | H.E. Sloan | Swivel connection for air--perated chucks | metal lathe chucks | |
| 3,649,051 | Mar. 14, 1972 | S.E. Klabunde, G.H. Jones | Collector Ring Arrangement | metalworking machine mechanisms | |