Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6953068 | Acetylene distribution system | Ted Royer, Brian Schumann, Donald F. Constantine, Craig Robertson, Joseph Burghard | 2005-10-11 |
| 6823906 | Acetylene distribution system | Ted Royer, Brian Schumann, Donald F. Constantine, Craig Robertson, Joseph Burghard | 2004-11-30 |
| 6070451 | Process and apparatus for testing of gas cylinders | David Norboge | 2000-06-06 |
| 5921291 | Process and apparatus for filling acetylene cylinders containing a porous packing materials | Ted Royer | 1999-07-13 |