Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4316227 | Multitrack magnetic head employing double helix structure | James U. Lemke | 1982-02-16 |
| 4314298 | Multitrack magnetic head employing double helix structure | James U. Lemke, Richard J. McClure | 1982-02-02 |