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US 3,371,537 A
Filed
: 09/16/1965
Issued
: 03/05/1968
Est. Priority Date
: 09/16/1965
Status: Expired due to Term
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Current Assignee
William J. Kiene
Original Assignee
William J. Kiene
Inventors
Kiene, William J.
Application Number
US04/487,686
Time in Patent Office
901 Days
Field of Search
US Class Current
73/706
CPC Class Codes
G01L 19/0015
using switching means
G01L 19/0636
using particle filters
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