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Friedrich W. Elhaus
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Wuppertal, DE
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last 30 patents
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Patent Grant
Method of and a plant for preheating and, possibly, heat-treating a...
Patent number
4,578,030
Issue date
Mar 25, 1986
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Preheating furnace for elongated material
Patent number
4,541,799
Issue date
Sep 17, 1985
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of and an apparatus for continuous heat treatment of separat...
Patent number
4,404,043
Issue date
Sep 13, 1983
Elhaus; Friedrich W.
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for heat treatment of material to be worked on, especiall...
Patent number
4,373,706
Issue date
Feb 15, 1983
Elhaus; Friedrich Wilhelm
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Preheating furnace
Patent number
4,303,388
Issue date
Dec 1, 1981
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for heat treatment of material to be worked on, especiall...
Patent number
4,245,818
Issue date
Jan 20, 1981
Prolizenz Aktiengesellschaft
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Preheating furnace
Patent number
4,153,236
Issue date
May 8, 1979
Friedrich W. Elhaus
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for heat treatment of material to be worked on...
Patent number
4,135,704
Issue date
Jan 23, 1979
Prolizenz AG.
Friedrich W. Elhaus
C21 - METALLURGY OF IRON