Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4289990 | Spark plug with a stepped insulator and an inner constriction in the housing | Kazuhisa Mayumi, Katsumi Suzuki | 1981-09-15 |
FT
Fujio Tsuboi
Toyota: 1 patents #15,335 of 26,838Top 60%
Overall (All Time): #4,096,854 of 4,157,543Top 100%
1
Patents All Time