Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796432 | Long hold time cryogens dewar | Dale J. Fixsen, John A. Imsdahl | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796432 | Long hold time cryogens dewar | Dale J. Fixsen, John A. Imsdahl | 1989-01-10 |