Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5419859 | Method of forming pipe insulation with an adhesive closure | David Hartman, Steven Hartman | 1995-05-30 |
| 5417901 | Method of forming pipe insulation with prestressed tape closure | David Hartman, Steven Hartman | 1995-05-23 |
| 4716695 | Steel framing system for multi-story buildings | Theodore Alexander, Claude Baker | 1988-01-05 |