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1671 Machine invented for cutting clock wheels: developed by 1784 into commercial availability. (Robert Hooke, Britain) 1700 Earliest accurate metalworking lathes in use. ...
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2017/08/19· The production of artificial abrasives in the late 19th century opened up a new field of machine tools, that of grinding machines. Norton of Massachusetts dramatically illustrated the potential of the grinding machine ...
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No. 639,742. Patented Dec. 26, I899. J. meme. GRINDING, POLISHING, 0R BUFFING MACHINE. (Application filed May 12, 1899.) (No Model.) 3 Sheets8heet l. ... Citing Patent Filing date Publication date Applicant Title US *
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