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Michael A. Kagan
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Bowling Green, KY, US
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last 30 patents
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Patent Grant
Wick heater
Patent number
D276260
Issue date
Nov 6, 1984
Koehring Company
Robert F. Shaftner
D23 - Environmental heating and cooling
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Patent Grant
Wick heaters
Patent number
4,474,166
Issue date
Oct 2, 1984
Koehring Company
Robert F. Shaftner
F24 - HEATING RANGES VENTILATING
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Patent Grant
Portable heater with integrated control system
Patent number
4,443,187
Issue date
Apr 17, 1984
Koehring Company
Robert S. Shaftner
F24 - HEATING RANGES VENTILATING