Martti Varis

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02140 Espoo 14, FI

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Patents Grantslast 30 patents

Information Patent Grant
Monitoring method for wastewater pump station and compatible apparatus
- Patent number 4,999,117
- Issue date Mar 12, 1991
- Oy E. Sarlin AB
- Jukka Palmu
- G08 - SIGNALLING
Information Patent Grant
Sewer system
- Patent number 4,297,751
- Issue date Nov 3, 1981
- Oy Wartsila AB
- Henry Olin
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Vacuum sewer system
- Patent number 4,184,506
- Issue date Jan 22, 1980
- Martti Varis
- E03 - WATER SUPPLY SEWERAGE