Richard J. Goettel

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Glendale, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Self tapping duct fitting and method of use
- Patent number 4,569,110
- Issue date Feb 11, 1986
- Richard J. Goettel
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Self-tapping duct fitting
- Patent number 4,491,124
- Issue date Jan 1, 1985
- Richard J. Goettel
- F24 - HEATING RANGES VENTILATING