Robert E. Zimmermann

Follow

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Metallurgical furnace
- Patent number 3,954,254
- Issue date May 4, 1976
- Koppers Company, Inc.
- Robert E. Zimmermann
- C21 - METALLURGY OF IRON
Information Patent Grant
Hot blast stove
- Patent number 3,947,245
- Issue date Mar 30, 1976
- Koppers Company, Inc.
- Robert E. Zimmermann
- C21 - METALLURGY OF IRON