David John Royle

Follow

Person

Oadby, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Smoke ventilation
- Patent number 11,167,156
- Issue date Nov 9, 2021
- David John Royle
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Smoke ventilation
- Patent number 10,265,552
- Issue date Apr 23, 2019
- David John Royle
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
SMOKE VENTILATION
- Publication number 20190314653
- Publication date Oct 17, 2019
- David John Royle
- E04 - BUILDING
Information Patent Application
SMOKE VENTILATION
- Publication number 20140248833
- Publication date Sep 4, 2014
- David John Royle
- E04 - BUILDING