Inventor

AKERSON DAVID WALLACE

3 patents

Patents

3 patents

US4072558AFeb 7, 1978

Non-combustible hardboard sheet

CONWED CORP34 citations88

US4073230AFeb 14, 1978

Method for embossing mineral fiber board

CONWED CORP20 citations77

US4024014AMay 17, 1977

Non-combustible hardboard sheet

CONWED CORP16 citations77