Spring Corkscrews
1883 Dunish and Scholer Patent, marked DRP 27175
W. Sommers' 1899 paperclip/spring corkscrew
J. Wolters' 1901 patent spring corkscrew, which utilizes a sliding cuff and clip.
more to come
Gotleib GieBler's 1914 pin and spring corkscrew
more to come
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