United States Patent 3480012
Inventors:
Smithers, John A.
Murray, William A.
Publication Date:
11/25/1969
Assignee:
John, Smithers A.
William, Murray A.
Other Classes:
128/DIG.015, 428/100
International Classes:
A61F13/00; A61F13/56; A61M15/00; A61F13/06