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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
B01D 24/00 |
| (11) | Number of the document | 4465 |
| (13) | Kind of document | B |
| (21) | Application number | 97-047 |
| (22) | Date of filing the application | 1997-03-20 |
| (41) | Date of publication of the application | 1998-09-25 |
| (45) | Date of publication of patent | 1999-02-25 |
| (71) |
Vytautas RUPLĖNAS,
Urbšo g. 11-35, 3043 Kaunas,
LT
Jonas GURSKAS, Blindžių g. 29-1, 2004 Vilnius, LT |
| (72) |
Vytautas RUPLĖNAS, LT
Jonas GURSKAS, LT |
| (73) |
Vytautas RUPLĖNAS,
Urbšo g. 11-35, 3043 Kaunas,
LT
Jonas GURSKAS, Blindžių g. 29-1, 2004 Vilnius, LT |
| (74) |
Lyra TARNAUSKIENĖ,
Žemalės g. 27-19, LT-48269 Kaunas,
LT
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| (54) | A SPIRAL ELEMENT OF A FILTER |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 1999-03-20 |