John Lawrence KEEN

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Nanaimo, BC, CA

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Patents Grantslast 30 patents

Information Patent Grant
Line blind valve
- Patent number 9,964,218
- Issue date May 8, 2018
- EVERGREEN MECHANICAL DESIGN LTD.
- Ryan Joseph Prontack
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Line Blind Valve
- Publication number 20160298775
- Publication date Oct 13, 2016
- Ryan Joseph PRONTACK
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...