Richard B. Learned

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North Chatham, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Low-flow groundwater sampling system
- Patent number 6,758,273
- Issue date Jul 6, 2004
- Richard B. Learned
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
Low-flow groundwater sampling system
- Publication number 20020157825
- Publication date Oct 31, 2002
- Richard B. Learned
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Well flow controller
- Publication number 20020007951
- Publication date Jan 24, 2002
- Richard Barr Learned
- E21 - EARTH DRILLING MINING