Knavish; Leonard A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Knavish; Leonard A..The latest application filed is for "melting glass with oxidation control and lowered emissions".
- Knavish; Leonard A. - Plum Boro PA
- Knavish; Leonard A. - Plum Borough PA
- Knavish; Leonard A. - Pittsburgh PA
| Patent | Date |
|---|---|
| Melting glass with oxidation control and lowered emissions Grant 5,006,144 - Knavish , et al. April 9, 1 | 1991-04-09 |
| Multi-stage process and apparatus for refining glass or the like Grant 4,798,616 - Knavish , et al. January 17, 1 | 1989-01-17 |
| Horizontal glassmaking furnace Grant 4,001,001 - Knavish , et al. January 4, 1 | 1977-01-04 |
| Vertical glassmaking furnace and method of operation Grant 3,998,619 - Cerutti , et al. December 21, 1 | 1976-12-21 |
| Method for producing flat glass Grant 3,928,014 - Knavish December 23, 1 | 1975-12-23 |
| Apparatus For Making Float Glass Grant 3,837,832 - Pecoraro , et al. September 24, 1 | 1974-09-24 |
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