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All Patents in class 147/37 | |||||
Number | Date | Patentee | Title | Type | |
432,976 | Jul. 29, 1890 | J.W. Carver | Wood Working Machinery | barrel making machines | |
568,978 | Oct. 06, 1896 | A. Hitzert | Barrel-head machine | cooper | |
1,452,010 | Apr. 17, 1923 | J.L. Walker | Machine for making barrel heads | barrel making machines |