United States Patent 3491753
Inventors:
Milton, William Frank
Brockenshaw, Harvey
Shaw, John Leathley
Publication Date:
01/27/1970
Assignee:
PRICE BROTHERS & CO LTD
Other Classes:
206/440, 602/75, 602/43
International Classes:
A61F13/00; A61F13/15; A61F13/56; A61F15/00