Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7908810 | Corrugated steel deck system including acoustic features | Stephen W. Payne, Jr., Kurt Goodfriend, David McDonald, Dennis Albert Socha, John Ellicson +2 more | 2011-03-22 |
| 7861470 | Self centering shaft wall system | James J. Lehane, Clifford Black | 2011-01-04 |
| 7712267 | Self centering shaft wall system | James J. Lehane, Clifford Black | 2010-05-11 |