Clifford N. Sellie

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Northbrook, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Computer assisted time study system
- Patent number 5,557,553
- Issue date Sep 17, 1996
- Clifford N. Sellie
- G07 - CHECKING-DEVICES
Information Patent Grant
Hand held decimal timer with improved frequency division
- Patent number 5,444,674
- Issue date Aug 22, 1995
- Clifford N. Sellie
- G04 - HOROLOGY