Erich A.T. Chang

Follow

Person

Taichung, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Drive mechanism for use in a man-driven vehicle
- Patent number 6,899,192
- Issue date May 31, 2005
- Ravor USA LLC
- Wei-Pin Chen
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Folding bicycle
- Patent number D487234
- Issue date Mar 2, 2004
- Razorusa LLC
- Robert Chen
- D12 - Transportation
Information Patent Grant
Tricycle
- Patent number D484073
- Issue date Dec 23, 2003
- Razor USA LLC
- Gregor Heinemann
- D12 - Transportation

Patents Applicationslast 30 patents

Information Patent Application
Drive mechanism for use in a man-driven vehicle
- Publication number 20040251068
- Publication date Dec 16, 2004
- RAZOR USA LLC.
- Wei-Pin Chen
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
Bicycle folding stem with positioning structure
- Publication number 20030155738
- Publication date Aug 21, 2003
- RAZOR USA LLC.
- Robert Chen
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS