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| Patents for C. T. Williamson Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 161,755 | Apr. 06, 1875 | W.R. Clough | Improvement in wire corkscrews | |
 | 196,226 | Oct. 16, 1877 | G. Havell | Improvement in corkscrews | |
 | 274,539 | Mar. 27, 1883 | C.T. Williamson | Corkscrew | |
 | 583,561 | Jun. 01, 1897 | W.A. Williamson | Corkscrew | |
 | 657,421 | Sep. 04, 1900 | R.W. Jorres | Corkscrew | |
 | 1,385,976 | Jul. 26, 1921 | E. Walker | Method of making crown-openers | |