Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5553634 | Compactly molded rib means for multiple-fold umbrella | — | 1996-09-10 |
| 5531237 | Shelter means on umbrella ferrules for concealing wire ends of rib-fastening wire | — | 1996-07-02 |
| 5370144 | Multiple-fold mini umbrella with centralized retraction | — | 1994-12-06 |
| 4951695 | Anti-slipping telescopic centerpost of multiple-fold umbrella | — | 1990-08-28 |
| 4858633 | Stable telescopic centerpost of multiple-fold umbrella | — | 1989-08-22 |
| 4815489 | Umbrella ink means having resilient link for accelerating folding operation | — | 1989-03-28 |
| 4766917 | Easily-folded link means of multiple-fold umbrella | — | 1988-08-30 |
| 4739783 | Shortening link means of multiple-fold umbrella | — | 1988-04-26 |
| 4676262 | Link means of multiple-fold umbrella | — | 1987-06-30 |