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公开(公告)号：US3621871A
公开(公告)日：1971-11-23
申请号：US3621871D
申请日：1969-12-15
Applicant: GEN MOTORS CORP
Inventor： ZIMMERLE WILBUR J , KERR LAMAR L , GUTE LOREN R
IPC: F16K17/196 , F16K17/26
CPC classification number: F16K17/196 , Y10T137/7771
Abstract: A valve in an automotive fuel tank vent line has a pair of pressure-responsive members which respectively relieve excess pressure and vacuum in the vent line.
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