Thaddeus Kowalczyk

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Dearborn Hts., MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Air purifier pleated filter to stop pollution for passenger inside...
- Patent number 5,192,346
- Issue date Mar 9, 1993
- Thaddeus Kowalczyk
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Air purifier-combination filter
- Patent number 4,702,753
- Issue date Oct 27, 1987
- Thaddeus Kowalczyk
- B60 - VEHICLES IN GENERAL