Oliver Joen-an Ma

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Arcadia, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Umbrella assembly with tilt adjustment
- Patent number 7,708,022
- Issue date May 4, 2010
- Oliver Joen-an Ma
- A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

Information Patent Application
Umbrella
- Publication number 20050268952
- Publication date Dec 8, 2005
- Oliver Joen-an Ma
- A45 - HAND OR TRAVELLING ARTICLES