Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6224115 | Bulkhead fitting for underground sump | Lawrence R. Blasch | 2001-05-01 |
| 6123365 | Structure for protecting a bulkhead fitting | — | 2000-09-26 |
| 5664951 | Inlet conduit adaptor for underground storage tank | Robert P. Clary, James E. Kesterman, Paul R. Wilder, David K. Larson | 1997-09-09 |
| 5222832 | Spill containment devices and their installation | Charles A. Sunderhaus, Eric J. Butterfield, James E. Kesterman | 1993-06-29 |
| 4804206 | Swivel construction and method of making the same | Chester W. Wood | 1989-02-14 |