Christopher Berens

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Boca Raton, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Teaching method and template to make a guide to teach piano
- Patent number 6,936,759
- Issue date Aug 30, 2005
- Christopher Berens
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Teaching method and guides to teach piano
- Patent number 6,881,887
- Issue date Apr 19, 2005
- Christopher P. Berens
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Teaching method and guides to teach piano
- Publication number 20050016359
- Publication date Jan 27, 2005
- Christopher P. Berens
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Teaching method and template to make a guide to teach piano
- Publication number 20040231491
- Publication date Nov 25, 2004
- Christopher Berens
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS