Jack K. Kiefer

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Glenview, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Wave suppressor
- Patent number D319284
- Issue date Aug 20, 1991
- Jack K. Kiefer
- D23 - Environmental heating and cooling
Information Patent Grant
Wave suppression means
- Patent number 4,894,873
- Issue date Jan 23, 1990
- Jack K. Kiefer
- E04 - BUILDING