David H. Leifheit

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Racine, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Dust prevention and removal device
- Patent number 8,328,894
- Issue date Dec 11, 2012
- S. C. Johnson & Son, Inc.
- Matthew N. Thurin
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Filter frame for a dust removal and prevention device
- Patent number D643099
- Issue date Aug 9, 2011
- S. C. Johnson & Son, Inc.
- Julie L. Bates
- D23 - Environmental heating and cooling
Information Patent Grant
Dust prevention and removal device
- Patent number D628281
- Issue date Nov 30, 2010
- S. C. Johnson & Son, Inc.
- Julie L. Bates
- D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

Information Patent Application
Dust Prevention And Removal Device
- Publication number 20100064895
- Publication date Mar 18, 2010
- Matthew N. Thurin
- F24 - HEATING RANGES VENTILATING