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| All Patents in class 279/46.9 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,448,423 | Aug. 31, 1948 | F.L. Dodge | Collet seal | collets and collet holders | |
| 2,533,758 | Dec. 12, 1950 | J.W. Lehde, B. Better | Floating Holder | drilling and boring tool holders | |