United States Patent 3544420
Inventors:
Murphy, James A.
Lee, Charles A.
Furbeck, Warren R.
Publication Date:
12/01/1970
Other Classes:
604/375, 428/167, 428/154, 604/379, 428/222, 428/198
International Classes:
D21H25/00; D21H27/40; D21H27/30; B32B29/00; B32B3/00