Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640455 | Method of making a metal seal for flanged joints and a seal made by said method | Lutz Grein | 1987-02-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640455 | Method of making a metal seal for flanged joints and a seal made by said method | Lutz Grein | 1987-02-03 |