United States Patent 2921432
Inventors:
Marcotte, Leonard G.
Marcotte, Alvin Q.
Publication Date:
01/19/1960
Assignee:
Marcotte, Leonard G.
Marcotte, Alvin Q.
Other Classes:
60/324, 60/309, 55/DIG.030
International Classes:
F01N3/00; F01N3/021; F01N7/00; F01N7/14