Receptacles – Closures – Superposed closures for common opening
Patent
1994-01-28
1996-05-07
Shoap, Allan N.
Receptacles
Closures
Superposed closures for common opening
215278, 215306, 220375, A61J 100, B65D 5516
Patent
active
055137687
ABSTRACT:
A sealing device for a container is provided with a sealing member that varies the sealing capacity of the device in response to pressure changes within the container.
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Newhouse Nathan
Shoap Allan N.
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