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| All Patents in class 269/22 | |||||
| Number | Date | Patentee | Title | Type | |
| 3,176,439 | Apr. 06, 1965 | J.R. Lemon, R.G. Gabriel | Machine Tool Workpiece Support | hydraulic apparatus | |
| 3,844,546 | Oct. 29, 1974 | D.K. Greenberg | Clamping fixture for a tubular workpiece | ||