Dean Kerkhoff

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Baldwin Park, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Pants with attached skirt
- Patent number 7,735,155
- Issue date Jun 15, 2010
- Dean Kerkhoff
- A41 - WEARING APPAREL
Information Patent Grant
Piano key finder and chord indicator
- Patent number 7,301,090
- Issue date Nov 27, 2007
- Dean Kerkhoff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Piano key finder and chord indicator
- Patent number 6,969,793
- Issue date Nov 29, 2005
- Dean Kerkhoff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
HORSE RACING GAME
- Publication number 20090045573
- Publication date Feb 19, 2009
- Dean Kerkhoff
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Pants with attached skirt
- Publication number 20070157367
- Publication date Jul 12, 2007
- Dean Kerkhoff
- A41 - WEARING APPAREL
Information Patent Application
Piano key finder and chord indicator
- Publication number 20050257665
- Publication date Nov 24, 2005
- Dean Kerkhoff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Piano key finder and chord indicator
- Publication number 20050011339
- Publication date Jan 20, 2005
- Dean Kerkhoff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS