Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5603512 | Side and gap sealed oil ring | Tsu Pin Shyu, Donald J. Waldman, Ross Paul Wietharn | 1997-02-18 |
KL
Keith E. Lawrence
Overall (1997): #119,824 of 185,788Top 65%
1
Patents 1997