Robert Boyd Johnston

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Tampa, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Twin screw press with interrupted flights
- Patent number 6,550,376
- Issue date Apr 22, 2003
- Robert Boyd Johnston
- B30 - PRESSES
Information Patent Grant
External tension adjustment device for a filtering sleeve in a filt...
- Patent number 6,117,321
- Issue date Sep 12, 2000
- Robert Boyd Johnston
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Twin screw press with interrupted flights
- Publication number 20020096062
- Publication date Jul 25, 2002
- Robert Boyd Johnston
- B30 - PRESSES