Robert D. Barnett

Follow

Person

Magnolia, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
High pressure valve
- Patent number 4,029,294
- Issue date Jun 14, 1977
- McEvoy Oilfield Equipment Co.
- John Walton McCaskill
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...