Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885714 | Calculator having a user-accessible object stack for the uniform application of mathematical functions and logical operations to a multiplicity of object types | Gabe L. Eisenstein, Laurence W. Grodd, Robert Miller, Charles M. Patton, William C. Wickes | 1989-12-05 |