Mark S. Keys

Follow

Person

Missouri City, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Methods and apparatus using a hydrocarbon gel to isolate mainline v...
- Patent number 5,419,183
- Issue date May 30, 1995
- HydroChem Industrial Services, Inc.
- Mark S. Keys
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Methods and apparatus using a gel to isolate mainline valves in a p...
- Patent number 5,197,324
- Issue date Mar 30, 1993
- Dowell Schlumberger Incorporated
- Mark S. Keys
- G01 - MEASURING TESTING