Douglas A. FINLAYSON

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Cage valve with instrumentation
- Patent number 10,012,327
- Issue date Jul 3, 2018
- Master Flo Valve Inc.
- Larry J. Bohaychuk
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Cage Valve with Instrumentation
- Publication number 20170051845
- Publication date Feb 23, 2017
- Master Flo Valve Inc.
- Larry J. BOHAYCHUK
- E21 - EARTH DRILLING MINING