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| All Patents in class 83/514 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,711,915 | May 07, 1929 | J.D. Williams | Auxiliary Scrap Shears | metal shearing machines | |
| 1,791,191 | Feb. 03, 1931 | J.E. Carlin | Shearing and Cutting Machine | metal shearing machines | |