Process of making resistant plated tubing
United States Patent 1728168

Inventors:
Pratt, Harold I.
Baker, Pratt Ruth
Publication Date:
09/10/1929
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Assignee:
Pratt, Harold I.
Baker, Pratt Ruth
Primary Class:
29/458
Other Classes:
464/183, 29/460, 76/4, 138/145, 165/133, 138/151, 76/DIG.004
International Classes:
B21C37/15