United States Patent 3477105
Inventors:
Cranage, Bidwell Chapman
Publication Date:
11/11/1969
Assignee:
STILE CRAFT MFG INC
Other Classes:
137/360, 285/192, 251/149.100
International Classes:
F16K27/02; F16L37/084; F16L37/407; F16L37/60; F16L37/00; F16L37/28; F16L37/28; F16B21/06