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Pressure responsive systems
US 2,979,955 A
Filed
: 04/12/1957
Issued
: 04/18/1961
Est. Priority Date
: 04/12/1957
Status: Expired due to Term
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Current Assignee
Paul R. Shepler
Original Assignee
Paul R. Shepler
Inventors
Shepler, Paul R.
Application Number
US03/652,585
Time in Patent Office
1,467 Days
Field of Search
US Class Current
73/720
CPC Class Codes
G01F 1/383
with electrical or electro-...
G01L 13/023
using bellows
G01L 9/0036
using variations in inductance
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