Charles E. Dull

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Fort Wayne, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Refrigerant air analyzer and purge system
- Patent number 5,906,106
- Issue date May 25, 1999
- SPX Corporation Robinair Division
- William C. Brown
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerant recovery system
- Patent number 5,209,077
- Issue date May 11, 1993
- SPX Corporation
- Kenneth W. Manz
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerant recovery, purification and recharging system and method
- Patent number 5,172,562
- Issue date Dec 22, 1992
- SPX Corporation
- Kenneth W. Manz
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Apparatus for identifying and distinguishing different refrigerants
- Patent number 5,158,747
- Issue date Oct 27, 1992
- SPX Corporation
- Kenneth W. Manz
- G01 - MEASURING TESTING