United States Patent 3050208
Inventors:
Irvine, Robert L.
Publication Date:
08/21/1962
Assignee:
Irvine, Robert L.
Other Classes:
220/628, 52/249, 220/679, 220/720, 220/612, 156/294, 62/45.100
International Classes:
F17B1/02; F17C3/02; F17B1/00; F17C3/00