Title:
Dry pipe clapper valves for automatic sprinkler systems
Document Type and Number:
United States Patent 2900029
Inventors:
Harold, Herkimer
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Publication Date:
08/18/1959
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Export Citation:
Assignee:
RAISLER CORP
Primary Class:
Other Classes:
137/467, 16/348
International Classes:
A62C35/62; A62C35/64; F16K15/03; A62C35/58; F16K15/02
US Patent References:
Foreign References:
| GB212460A |