Device for taking fluid samples from closed systems
United States Patent 3412613

Inventors:
Brown, Raymond E.
Hickerson, Richard A.
Publication Date:
11/26/1968
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Primary Class:
73/863.850
Other Classes:
137/318, 73/864.740
International Classes:
G01N1/20
US Patent References:
3229711Method and apparatus for connecting a service line to a main without escape of fluidfrom the main to the atmosphere




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