Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866599 | Call instruction, return instruction and trap procedure for ring crossing architecture | Patrick E. Prange | 1989-09-12 |
| 4833603 | Apparatus and method for implementation of a page frame replacement algorithm in a data processing system having virtual memory addressing | James B. Geyer | 1989-05-23 |