David P. Oliver

Follow

Person

Saltash, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Ladder improvements
- Patent number 5,174,411
- Issue date Dec 29, 1992
- Abru Aluminium Limited
- David P. Oliver
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS