Oswaldo Angel

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Los Angeles, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Writing instrument teaching system
- Patent number 10,388,174
- Issue date Aug 20, 2019
- Oswaldo Angel
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Writing Instrument Teaching System
- Publication number 20150221226
- Publication date Aug 6, 2015
- Oswaldo Angel
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES