United States Patent 1962256
Inventors:
Nelson, Everett C.
Ledgerwood, Carl W.
Wilson, George L.
Publication Date:
06/12/1934
Assignee:
Nelson, Everett C.
Ledgerwood, Carl W.
Wilson, George L.
International Classes:
A63B69/36; A63B69/00; A63B69/36; A63B69/00