Varis; Martti
Patent Applications and Registrations
Patent applications and USPTO patent grants for Varis; Martti.The latest application filed is for "monitoring method for wastewater pump station and compatible apparatus".
- Varis; Martti - Espoo FI
- Varis; Martti - 02140 Espoo 14 FI
- Varis; Martti - Leppavaara SF
| Patent | Date |
|---|---|
| Monitoring method for wastewater pump station and compatible apparatus Grant 4,999,117 - Palmu , et al. March 12, 1 | 1991-03-12 |
| Sewer system Grant 4,297,751 - Olin , et al. November 3, 1 | 1981-11-03 |
| Vacuum sewer system Grant 4,184,506 - Varis , et al. January 22, 1 | 1980-01-22 |
| Vacuum sewer valve Grant 3,984,080 - Varis , et al. October 5, 1 | 1976-10-05 |
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