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| All Patents of Type: surface plates | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,383,629 | Jul. 05, 1921 | F.O. Hoagland | Surface Plate | surface plates | |
| 1,889,897 | Dec. 06, 1932 | C.E. Johansson | Surface plate | surface plates | |
| 3,739,150 | Jun. 12, 1973 | R.J. Rahn | Granite Surface Plate With Controlled Heat | surface plates | |