Chang; Chester
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Chester.The latest application filed is for "exercise mechanism".
- Chang; Chester - Ta Ya Hsiang Taichung Hsien TW
- Chang; Chester - San Ho Tsun Ta Ya Hsiang TW
| Patent | Date |
|---|---|
| Exercise mechanism Grant 5,203,751 - Chang April 20, 1 | 1993-04-20 |
| Exercise bicycle Grant 4,962,925 - Chang October 16, 1 | 1990-10-16 |
| Exercising mechanism for simulating climbing a ladder Grant 4,961,570 - Chang October 9, 1 | 1990-10-09 |
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