Hsiang L. Pai

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Scarborough, Ontario M1V 3L3, CA

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Patents Grantslast 30 patents

Information Patent Grant
Time-average radon daughters (WL) dosimeter for mines, indoor and e...
- Patent number 4,864,143
- Issue date Sep 5, 1989
- Hsiang L. Pai
- G01 - MEASURING TESTING
Information Patent Grant
Time-averaged radon daughters (WL) dosimeter and method for surveys...
- Patent number 4,861,985
- Issue date Aug 29, 1989
- Hsiang L. Pai
- G01 - MEASURING TESTING