Francis J. O'Connor

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Rockville Center, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous gypsum calcination process and kettle therefor
- Patent number 4,113,836
- Issue date Sep 12, 1978
- National Gypsum Company
- Francis J. O'Connor
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES