Title:
Check-unit or valve
Document Type and Number:
United States Patent 2710023

Inventors:
Blackford, Raymond H.
Von, Kokeritz Karl
Schwaller, Bernard L.
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Sponsored by:
Flash of Genius
Publication Date:
06/07/1955
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Referenced by:
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Assignee:
DURABLA MFG COMPANY
Primary Class:
137/543.190
Other Classes:
137/515.500
International Classes:
F16K15/02
US Patent References:
1160707
1236950
1275697
1770669Swivel connecter
1900736Valve
1959644Valve
1993567Valve
2038267Exhalation valve
2216622Check valve
2253643Valve
2265554Bearing
2591060Excess flow control valve
Foreign References:
FR802307A
DE673045C




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