United States Patent 2704033
Inventors:
Koeper, Casper J.
Gilholly, Francis P.
Samuel, Wasserman
Publication Date:
03/15/1955
Assignee:
Koeper, Casper J.
Gilholly, Francis P.
Samuel, Wasserman
International Classes:
F42C15/20; F42C15/21; F42C15/30; F42C15/00