Benno E. O. Klank

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Boulder, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Heat conservation and storage apparatus and system
- Patent number 4,335,703
- Issue date Jun 22, 1982
- Benno E. O. Klank
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Heat collecting and transferring apparatus and systems adapted for...
- Patent number 4,127,103
- Issue date Nov 28, 1978
- Benno E. O. Klank
- F24 - HEATING RANGES VENTILATING