United States Patent 3204637
Inventors:
Frank, Erich J.
Friedmann, Lawrence W.
Publication Date:
09/07/1965
Assignee:
Frank, Erich J.
Friedmann, Lawrence W.
Other Classes:
607/61, 607/74, 607/70
International Classes:
A61F2/72; A61N1/36; A61N1/378; A61F2/50; A61N1/372