Refrigeration – With indicator or tester – Diverse function indicators or testers
Reexamination Certificate
2011-03-15
2011-03-15
Norman, Marc E (Department: 3744)
Refrigeration
With indicator or tester
Diverse function indicators or testers
C062S129000, C073S019030, C073S019100, C250S574000
Reexamination Certificate
active
07905099
ABSTRACT:
A predictive maintenance method and apparatus for HVACR systems including a sensor capable of detecting the presence of a gaseous phase in the refrigerant fluid at a location wherein solely liquid phase should be present if the system is functioning properly.
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GrayRobinson, P.A.
Norman Marc E
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