Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683234 | Hand pump apparatus having two pumping strokes and having an attachment member for engaging with different tire valves | Louis Chuang | 1997-11-04 |
| 5666990 | Attachment member for engaging with different tire valves | — | 1997-09-16 |
| 5645100 | Hand pump for engaging with different tire valves | Louis Chuang | 1997-07-08 |
| 5638865 | Hand pump attachment member for engaging with different tire valves | — | 1997-06-17 |
| 5624242 | Hand air pump for different types of valves | — | 1997-04-29 |