Walter Kroll

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7141 Kirchberg/Murr, DE

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Patents Grantslast 30 patents

Information Patent Grant
Oil stove for burning waste oil and normal heating oil
- Patent number 4,385,621
- Issue date May 31, 1983
- Walter Kroll
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Combustion apparatus for burning waste oils
- Patent number 4,351,316
- Issue date Sep 28, 1982
- Walter Kroll
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Oil stove for burning waste oil and normal heating oil
- Patent number 4,308,854
- Issue date Jan 5, 1982
- Walter Kroll
- F24 - HEATING RANGES VENTILATING