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Bibliographic data

Indications of the International Patent Classification (IPC)
(51)	INT.CL.: (2006.01)	B01D 53/34 C01B 17/00

Patent
(11)	Number of the document	2548
(13)	Kind of document	B
(21)	Application number	RP1229
(22)	Date of filing the application	1993-09-28
(41)	Date of publication of the application
(45)	Date of publication of patent	1994-02-15

PCT application
(86)	Number	1679969
	Date	1985-11-06

Priority applications
(30)	Number	Date	Country code
	851624	1985-04-24	FI

Applicant
(71)	OY TAMPELLA AB, P.O. Box 256, SF-33101 Tampere, FI

Inventors
(72)	Sirpa HAEMAELAE, FI Timo KENAKKALA, FI Pentti JANKA, FI Tuomo RUOHOLA, FI Martti LEHTIMAEKI, FI

Grantee
(73)	OY TAMPELLA AB, P.O. Box 256, SF-33101 Tampere, FI

Attorney or representative
(74)	Marius JAKULIS - JASON, AAA Law, A. Goštauto g. 40B, Verslo centras "Dvyniai", LT-03163 Vilnius, LT

Title
(54)

Last renewal fee
	Payment date	Validity (years)	Amount
	1996-08-16	6	250.00 USD

Legal status
	Patent lapsed (non-payment of fees)
	Invalidation date	1997-09-28