Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5081802 | Method and apparatus for lining manhole assemblies and the like | James A. Westhoff, James E. Parker | 1992-01-21 |
| 5054794 | Clamping band for gaskets and the like and expansion means therefor | James A. Westhoff | 1991-10-08 |
| 4890863 | Metallic adjustable clamping band for gaskets | James A. Westhoff | 1990-01-02 |
| 4746127 | Adjustable clamping band for gaskets and method for using same | James A. Westhoff | 1988-05-24 |