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Pyreflex Corporation
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Buckfield, ME, US
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Patents Grants
last 30 patents
Information
Patent Grant
Inhibiting shrinkage pipe formation of metal casting
Patent number
4,463,797
Issue date
Aug 7, 1984
Pyreflex Corp.
Charles A. Berg
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Insulating structure for high temperature devices
Patent number
4,398,474
Issue date
Aug 16, 1983
Pyreflex Corporation
Charles A. Berg
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Oscillating retroreflector
Patent number
4,307,939
Issue date
Dec 29, 1981
Pyreflex Corporation
Charles A. Berg
G02 - OPTICS
Information
Patent Grant
Ingot casting
Patent number
4,290,475
Issue date
Sep 22, 1981
Pyreflex Corporation
Charles A. Berg
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Temperature confining devices and method
Patent number
4,256,919
Issue date
Mar 17, 1981
Pyreflex Corp.
Charles A. Berg
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Precise thermal processing apparatus
Patent number
4,195,820
Issue date
Apr 1, 1980
Pyreflex Corporation
Charles A. Berg
C21 - METALLURGY OF IRON
Information
Patent Grant
Heat conservation in workpieces
Patent number
4,192,646
Issue date
Mar 11, 1980
Pyreflex Corporation
Charles A. Berg
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and apparatus for controllably exchanging heat between two...
Patent number
4,188,519
Issue date
Feb 12, 1980
Pyreflex Corporation
Charles A. Berg
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Heat recuperator
Patent number
4,160,577
Issue date
Jul 10, 1979
Pyreflex Corporation
Charles A. Berg
F24 - HEATING RANGES VENTILATING
Patents Applications
last 30 patents
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