Valve and valve-seat facing tool
United States Patent 1450116
Inventors:
Ruhlandt, Walther C.
Publication Date:
03/27/1923
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Assignee:
Ruhlandt, Walther C.
Primary Class:
Other Classes:
408/223, 408/83.500, 82/172, 15/104.020, 451/430
International Classes:
B23C3/05; B23C3/00