Title:
Cement gun nozzle
United States Patent 1885645

Inventors:
Vawter, John T.
Publication Date:
11/01/1932
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Assignee:
Vawter, John T.
Primary Class:
239/549
Other Classes:
55/461, 366/11, 239/556, 239/553
International Classes:
E04F21/12; E04F21/02