Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5848153 | Blast proof apparatus for the coin return cavity of a public phone | Yi-Rong Lee, Li-Te Cheng | 1998-12-08 |
| 5829569 | Coin reception mechanism | Li-Te Cheng | 1998-11-03 |
| 5737402 | Coin release mechanism of pay phone | Li-Te Cheng | 1998-04-07 |
| 5734717 | Reinforced pay phone casing structure | Li-Te Cheng | 1998-03-31 |