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Patents for John B. Dougherty | |||||
Number | Date | Patentee | Title | Type | |
211,715 | Jan. 28, 1879 | J.B. Dougherty | Improvement in barrel-hoop machines | hoop making machines | |
211,716 | Jan. 28, 1879 | J.B. Dougherty, J. Naylor, Jr. | Improvement in machines for dressing and compressing hoops | hoop making machines | |
256,468 | Apr. 18, 1882 | J.B. Dougherty | Hoop-making machine | hoop making machines |