Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758046 | Slush hydrogen production method and apparatus | John A. Barclay, Peter J. Claybaker, Carl Bruno Zimm, Steven F. Kral | 2004-07-06 |
| 4956976 | Magnetic refrigeration apparatus for He II production | Stephen F. Kral, John A. Barclay, Peter J. Claybaker | 1990-09-18 |