Charles B. Stieff

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Kensington, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Electronic fiber optic seal monitors
- Patent number 7,872,220
- Issue date Jan 18, 2011
- Charles B. Stieff
- G01 - MEASURING TESTING
Information Patent Grant
Self-monitoring seal
- Patent number 4,262,284
- Issue date Apr 14, 1981
- Lorin R. Stieff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS