| 11401810 |
Removable and replaceable anchored tunnel gasket |
Richard J. Bowers, Troy Davidson, James A. Westhoff, George M. Stamper |
2022-08-02 |
| 10954668 |
Removable and replaceable anchored tunnel gasket |
Richard J. Bowers, Troy Davidson, James A. Westhoff |
2021-03-23 |
| 10662643 |
Removable and replaceable anchored frame-like tunnel gasket construction with soft corners |
Richard J. Bowers |
2020-05-26 |
| 7922179 |
Cast-in-place gasket for pipe joints |
Johann Schlusselbauer |
2011-04-12 |
| 7401791 |
Gasket with locking lugs |
Michael Ferrara |
2008-07-22 |
| 7331582 |
Gasket |
William V. Shaffer |
2008-02-19 |
| 6948718 |
Gasket |
William V. Shaffer |
2005-09-27 |
| 6719302 |
Symmetrical gasket for a pipe joint with increased surface contact |
— |
2004-04-13 |
| 6406025 |
Gasket and method for fabrication and use with corrugated pipe |
James A. Westhoff, James A. Kelly |
2002-06-18 |
| 5687976 |
Symmetrical gasket for a pipe joint |
Salvatore R. Brugnano |
1997-11-18 |
| 4602792 |
Dual function gasket with dual lips and optional locking ring |
— |
1986-07-29 |
| 4602793 |
Gasket with encapsulated locking ring |
— |
1986-07-29 |
| 4555885 |
Filler strip with locking clip |
Ronald Raymond |
1985-12-03 |