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| All Patents in class 279/900 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,893,355 | Jul. 08, 1975 | C.R. Maastricht | Coolant Supply System for Cutting Tools in a Machine Tool | coolant apparatus | |
| 4,053,968 | Oct. 18, 1977 | C. Gladoske, E.E. Johnson | Tool Support for Tool Interchange System | tool changers and storage mechanisms | |
| 4,238,167 | Dec. 09, 1980 | J.J. Hughes, D.M. Brugger | Toolholder Adapter | metalworking machine tool holders | |