Donald Edward Coffey

Follow

Person

Littleton, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Drainage pipe support/diverter system
- Patent number 6,695,538
- Issue date Feb 24, 2004
- Donald Edward Coffey
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Cascading chute drainage system
- Patent number 6,517,283
- Issue date Feb 11, 2003
- Donald Edward Coffey
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
Cascading chute drainage system
- Publication number 20020094237
- Publication date Jul 18, 2002
- Donald Edward Coffey
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING