Crosswords1 min ago
Response to Bowler900
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Thanks for E-Mail of 23.24 on7/3/06.
Q. was Joseph P-C-A-D, inventor of 18 Slider challenge lock
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For more on marking an answer as the "Best Answer", please visit our FAQ.Joseph Bramah patented his lock in 1784, it can be said that it was a milestone in the development of security locks. He had recognized the inherent weaknesses of previous locks and designed a lock which, he believed had none of the previous weaknesses. His patent lock is a masterpiece, with 18 sliders offering over 479 million key differs.
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