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Kiinteistojen LVI-Palvelu ja Suunnittelu H. Armanto KY
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Turku, FI
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Patent Grant
Apparatus for keeping a rain water well unfrozen
Patent number
5,000,217
Issue date
Mar 19, 1991
Kiinteistojen LVI-Palvelu ja Suunnittelu H. Armanto KY
Heikki Armanto
E03 - WATER SUPPLY SEWERAGE