United States Patent 2940466
Inventors:
Gale, Speights
Publication Date:
06/14/1960
Other Classes:
239/207, 239/261, 239/273, 285/61, 239/264, 4/615, 285/179, 239/289, 239/251, 239/208
International Classes:
A01G25/00; E04H17/06; E04H17/14; F16L1/024; E04H17/02