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Class Information
Number: 114/212
Name: Ships > Ventilation > Valves
Description: Ventilating devices in which cowls or hoods are provided with valves, dampers, or baffle-plates to prevent the ingress of water.

Patents under this class:

Patent Number Title Of Patent Date Issued
5081912 Vehicle vent Jan. 21, 1992
4611551 Snorkel mast for a semi-submersible vehicle Sep. 16, 1986
4535715 Air vent Aug. 20, 1985
4518363 Vent assembly for marine propulsion devices May. 21, 1985
4143672 Anti-pollution valve for use with shipboard storage tanks Mar. 13, 1979
3999571 Pressure relief valves Dec. 28, 1976
3930457 Conduit-mounted valve-vent interlock especially for tank ships Jan. 6, 1976

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