Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5870993 | Method and apparatus for operating a spark-ignited reciprocating-piston internal combustion engine | Helmut Endres | 1999-02-16 |
HS
Hans-Peter Stellet
Overall (All Time): #3,641,963 of 4,157,543Top 90%
1
Patents All Time