Vassallo; Efrain D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Vassallo; Efrain D..The latest application filed is for "pipe socket insert".
- Vassallo; Efrain D. - Ponce PR
| Patent | Date |
|---|---|
| Pipe socket insert Grant 4,834,430 - Vassallo , et al. May 30, 1 | 1989-05-30 |
| Gasket seating ring Grant 4,826,028 - Vassallo , et al. May 2, 1 | 1989-05-02 |
| Pipe belling apparatus Grant 4,723,905 - Vassallo , et al. February 9, 1 | 1988-02-09 |
| Pipe coupling Grant D291,482 - Vassallo , et al. August 18, 1 | 1987-08-18 |
| Tee pipe fitting Grant D291,480 - Vassallo , et al. August 18, 1 | 1987-08-18 |
| Gasket Grant D289,078 - Vassallo , et al. March 31, 1 | 1987-03-31 |
| Method for seating a gasket in a plastic pipe bell using a hard configured ring Grant 4,625,383 - Vassallo , et al. December 2, 1 | 1986-12-02 |
| Pipe fitting interlocking system Grant 4,583,772 - Vassallo , et al. * April 22, 1 | 1986-04-22 |
| Gasket Grant 4,579,354 - Vassallo , et al. April 1, 1 | 1986-04-01 |
| Pipe fitting construction Grant 4,474,392 - Vassallo , et al. October 2, 1 | 1984-10-02 |
| Pipe bell and gasket Grant 4,343,480 - Vassallo August 10, 1 | 1982-08-10 |
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