United States Patent 2570698
Inventors:
Manseau, David O.
Publication Date:
10/09/1951
Assignee:
Manseau, David O.
Other Classes:
184/6.280, 184/6.600, 123/196R, 384/404, 184/27.100, 92/152
International Classes:
F04B1/12; F04B1/14; F04B1/18; F04B23/06; F04B49/00; F04B49/18; F04B23/00