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The Padlock Patent Archive

Three centuries of keeping things shut

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Corbin cabinet lock company

Patent drawing sheet showing a round padlock with a curved hasp (B) and casing (A), plus eight numbered figures illustrating the internal sliding plate, pivoted tumbler sections, locking bolt, gears, and a flat key, with inventor's signature and witness signatures at bottom.

PADLOCK.Willard D. Doremus · April 28, 1891

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