Charles A. Berg

Person

Buckfield, ME, US

People

Patents Grantslast 30 patents

Information Patent Grant
Portable collapsible wheels
- Patent number 4,602,823
- Issue date Jul 29, 1986
- Charles A. Berg
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Compression loaded collapsible wheel
- Patent number 4,465,321
- Issue date Aug 14, 1984
- Charles A. Berg
- B60 - VEHICLES IN GENERAL
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
Energy conservation in shower bathing
- Patent number 4,398,308
- Issue date Aug 16, 1983
- Charles A. Berg
- F28 - HEAT EXCHANGE IN GENERAL
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
Energy conservation in shower bathing
- Patent number 4,300,247
- Issue date Nov 17, 1981
- Charles A. Berg
- F24 - HEATING RANGES VENTILATING
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
Solar powered heat pump construction
- Patent number 4,231,772
- Issue date Nov 4, 1980
- Owens-Illinois, Inc.
- Charles A. Berg
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Modular solar powered heat pump
- Patent number 4,199,952
- Issue date Apr 29, 1980
- Owens-Illinois, Inc.
- Charles A. Berg
- F24 - HEATING RANGES VENTILATING
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
Solar powered intermittent cycle heat pump
- Patent number 4,187,688
- Issue date Feb 12, 1980
- Owens-Illinois, Inc.
- Charles A. Berg
- F24 - HEATING RANGES VENTILATING
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
Information Patent Grant
Heat recuperation
- Patent number 4,082,414
- Issue date Apr 4, 1978
- Pyreflex Corporation
- Charles A. Berg
- F24 - HEATING RANGES VENTILATING

Charles A. Berg

Person

Patents Grantslast 30 patents

Portable collapsible wheels

Compression loaded collapsible wheel

Inhibiting shrinkage pipe formation of metal casting

Energy conservation in shower bathing

Insulating structure for high temperature devices

Oscillating retroreflector

Energy conservation in shower bathing

Ingot casting

Temperature confining devices and method

Solar powered heat pump construction

Modular solar powered heat pump

Precise thermal processing apparatus

Heat conservation in workpieces

Solar powered intermittent cycle heat pump

Process and apparatus for controllably exchanging heat between two...

Heat recuperator

Heat recuperation