Gerhard W. Voll

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Moundsview, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Semi-concentrating solar energy collector
- Patent number 4,586,489
- Issue date May 6, 1986
- Minnesota Mining and Manufacturing Company
- Gerhard W. Voll
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
High fluorescent efficiency zinc oxide crystals and method of makin...
- Patent number 4,181,627
- Issue date Jan 1, 1980
- Minnesota Mining and Manufacturing Company
- Richard L. Weiher
- C30 - CRYSTAL GROWTH