Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5629626 | Apparatus and method for measuring buried ferromagnetic objects with a high accuracy of position and in synchronization with a sync pulse provided by a global positioning system | Richard J. Russell, Alan L. Crandall, Robert Mark Siegel, John E. Foley, Thomas Alexander Glenn, III | 1997-05-13 |
| 4979846 | Contraction joint for concrete linings | Ronald A. Hill | 1990-12-25 |