DRILL POINT GEOMETRY , an article by JOSEPH MAZOFF
2020-2-22 · DRILL POINT GEOMETRY by JOSEPH MAZOFF. Mr. Joseph Mazoff, inventor, member of the Society of Manufacturing Engineers and president of J & A Machinery started his metal crafts career in Pennsylvania as a young apprentice nine years old in a black smith shop in 1926. In 1938 at age 18, competing against more than 300 experienced competitors in ...
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