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Trine; John A.
Landfall, MN
No. of patents:

Patent Number Title Of Patent Date Issued
4102201 Vapor sampling and analytical device July 25, 1978
A device and method for collecting selected components of a fluid mixture such as ambient air are disclosed. A chamber formed by wall members and having an open end contains a layer of collecting material on the bottom thereof and a porous layer covering the open end. After this device h
3950980 Vapor sampling device April 20, 1976
A device for measuring the presence or time-average amounts of at least one selected gas in a mixture thereof which comprises an enclosure having therewithin at least one substance which interacts with the gas to be monitored. Attenuating means associated with the enclosure regulate gas

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