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Andrew S. D. Crum
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Warren, PA, US
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last 30 patents
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Patent Grant
Apparatus for the cooling of articles which have been subjected to...
Patent number
4,602,769
Issue date
Jul 29, 1986
National Forge Company
Andrew S. D. Crum
C21 - METALLURGY OF IRON
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Patent Grant
Multizone electrical furnace methods and apparatus
Patent number
4,011,430
Issue date
Mar 8, 1977
National Forge Company
Donald Eli Witkin
G05 - CONTROLLING REGULATING
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Patent Grant
Furnace assembly
Patent number
4,007,325
Issue date
Feb 8, 1977
National Forge Company
Arnold G. Bowles
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Hot isostatic press
Patent number
3,973,886
Issue date
Aug 10, 1976
National Forge Company
Andrew Stephenson Dalgleish Crum
B22 - CASTING POWDER METALLURGY