History of socket head screws

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Posted by Richard Davies (158.152.140.35) on January 09, 2003 at 17:29:30:

Can anyone tell me when and where the socket head screw was first patented?

Re: History of socket head screws ewtydh 10:36:33 01/21/03 (0)
Re: History of socket head screws Your stupid 10:34:51 01/21/03 (0)

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: Can anyone tell me when and where the socket head screw was first patented?

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