Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4737876 | Write protect device for a record disk assembly | George W. Brock, Edward Mroz, Robert Janning | 1988-04-12 |
| 4626949 | Magnetic record disk cleaning and stabilizing assembly | George W. Brock, Edward Mroz, Robert Janning | 1986-12-02 |