Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4246857 | Thread tensioning device for a sewing machine | — | 1981-01-27 |
TG
Tohru Gonnai
Overall (All Time): #4,082,390 of 4,157,543Top 100%
1
Patents All Time