Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7511633 | Extension cord capable of providing estimated power costs incurred by an electrical appliance plugged thereinto | Chia-Ming Chang | 2009-03-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7511633 | Extension cord capable of providing estimated power costs incurred by an electrical appliance plugged thereinto | Chia-Ming Chang | 2009-03-31 |