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All Patents in class 239/455 | |||||
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Number | Date | Patentee | Title | Type | |
213,311 | Mar. 18, 1879 | E.R. Addison | Variable Exhaust for Locomotives | locomotive exhausts | |
1,345,802 | Jul. 06, 1920 | F.E. Munschauer | Gage for sheet-metal shears, &c. | sheet metal |