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| Patents for Eclipse Interchangeable Counterbore Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,255,304 | Feb. 05, 1918 | E. Gairing | Hollow Milling Tool | milling machine cutters | |
| 1,378,290 | May 17, 1921 | J.H. Smith | Adjustable Tool Holder | drilling and boring tool holders | |
| 1,975,215 | Oct. 02, 1934 | U.G. Thomas | Tool Holder | drilling and boring tool holders | |
| 2,043,598 | Jun. 09, 1936 | A. Subia | Adjustable Tool Holder | drilling and boring tool holders | |