Chang; Richard S.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Richard S..The latest application filed is for "toy car launcher with cable driven shuttle and pulleys".
- Chang; Richard S. - Rolling Hills Estates CA
- Chang; Richard S. - Rolling Hills Est. CA
- Chang; Richard S. - Gardena CA
| Patent | Date |
|---|---|
| Toy car launcher with cable driven shuttle and pulleys Grant 5,052,973 - Rudell , et al. October 1, 1 | 1991-10-01 |
| Teaching and entertainment device Grant 4,492,582 - Chang , et al. January 8, 1 | 1985-01-08 |
| Electronic bowling game Grant 4,369,971 - Chang , et al. January 25, 1 | 1983-01-25 |
| Obstacle game Grant 4,162,792 - Chang , et al. July 31, 1 | 1979-07-31 |
| Simulated Jet Airplane Toy Grant 3,796,005 - Chang , et al. March 12, 1 | 1974-03-12 |
| Impact-damage-resistant, Propeller-driven Toy Grant 3,757,461 - Chang , et al. September 11, 1 | 1973-09-11 |
| Electronic Organ Wherein Musical Sounds And A Tremolo Effect Are Provided By Electro-optical Apparatus Grant 3,647,927 - Chang , et al. March 7, 1 | 1972-03-07 |
| Auto Chord Device Grant 3,568,560 - Chang , et al. March 9, 1 | 1971-03-09 |
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