Jie Song

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Device and method for recording air conditioning system information
- Patent number 8,117,862
- Issue date Feb 21, 2012
- Trane International Inc.
- Robert W. Helt
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Device and method for recording air conditioning system information
- Publication number 20080223944
- Publication date Sep 18, 2008
- American Standard International, Inc.
- Robert W. Helt
- F24 - HEATING RANGES VENTILATING