Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6212854 | Apparatus for charging canisters with a high pressure gas | Ronald W. Richardson, Jr., James R. Harrington, Douglas M. Leonard | 2001-04-10 |
| 5829223 | Apparatus for charging canisters with a high pressure gas | Ronald W. Richardson, Jr., James R. Harrington, Douglas M. Leonard | 1998-11-03 |
| 5791122 | System and method for charging canisters with a high pressure gas | Douglas M. Leonard | 1998-08-11 |