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3712111
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Information
Patent Grant
3712111
References
Source
Patent Number
3,712,111
Date Filed
Not available
Date Issued
Tuesday, January 23, 1973
51 years ago
CPC
H01J49/0495 - Vacuum locks; Valves
G01N30/722 - through a gas permeable barrier (membranes, porous layers)
G01N30/84 - Preparation of the fraction to be distributed
H01J49/0427 - using a membrane permeable to gases
US Classifications
073 - Measuring and testing
096 - Gas separation: apparatus
250 - Radiant energy
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