Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10024052 | Mechanically secured block assembly systems | — | 2018-07-17 |
| 9328501 | Use devices for mechanically secured block assembly systems | J Kevin Harris, Dan Ertl, John D Ritchison | 2016-05-03 |
| 9206597 | Unitized post tension block system for masonry structures | Patricia M. Marsh | 2015-12-08 |
| 8850763 | Super unitized post tension block system for high high strength masonry structures—with SuperStrongBloks | Patricia M. Marsh | 2014-10-07 |
| 8099918 | Special and improved configurations for unitized post tension block systems for masonry structures | Patricia M. Marsh | 2012-01-24 |
| 7934345 | Systems for building construction by attaching blocks with bolts and vertically spaced flat bars | Patricia M. Marsh | 2011-05-03 |