John L. de Ris

Follow

Person

Foxborough, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Anti-skipping sprinkler
- Patent number 7,699,116
- Issue date Apr 20, 2010
- FM Global Technologies
- John L. de Ris
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Wet sprinkler system for cold environments
- Patent number 6,367,560
- Issue date Apr 9, 2002
- Factory Mutual Research Corp.
- John L. de Ris
- A62 - LIFE-SAVING FIRE-FIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Anti-skipping sprinkler
- Publication number 20090151962
- Publication date Jun 18, 2009
- FM Global Technologies
- John L. de Ris
- A62 - LIFE-SAVING FIRE-FIGHTING