Valve unit
United States Patent 2823691
US Patent References:
/0668202.html
- - 0668202


Inventors:
Chatham, George N.
Shurtleff O. O.
Publication Date:
02/18/1958
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Assignee:
Chatham, George N.
Shurtleff O. O.
Primary Class:
137/106
Other Classes:
137/877, 62/324.600, 137/601.140, 137/599.080, 62/278, 62/160
International Classes:
F25B41/04