Tidal drainage and irrigation valve
United States Patent 2860636
Inventors:
Seitchik, Murray W.
Sbarbaro Jr., John L.
Publication Date:
11/18/1958
Assignee:
Seitchik, Murray W.
Sbarbaro Jr., John L.
Other Classes:
604/35, 604/128
International Classes:
A61M3/02; A61M3/00