Daniel L. Barker

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Suffolk, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Sample collection system
- Patent number 6,925,895
- Issue date Aug 9, 2005
- Hampton Roads Sanitation District
- Daniel L. Barker
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Sample collection system
- Publication number 20030004474
- Publication date Jan 2, 2003
- Daniel L. Barker
- G01 - MEASURING TESTING