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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2021.01) |
E04F 13/23 G10K 11/16 |
| (11) | Number of the document | 6879 |
| (13) | Kind of document | B |
| (21) | Application number | 2020 017 |
| (22) | Date of filing the application | 2020-05-18 |
| (41) | Date of publication of the application | 2021-11-25 |
| (45) | Date of publication of patent | 2022-01-10 |
| (71) |
Vilniaus Gedimino technikos universitetas,
Saulėtekio al. 11, 10223 Vilnius,
LT
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| (72) |
Tomas ASTRAUSKAS, LT
Raimondas GRUBLIAUSKAS, LT |
| (73) |
Vilniaus Gedimino technikos universitetas,
Saulėtekio al. 11, 10223 Vilnius,
LT
|
| (74) |
| (54) | ADJUSTABLE POROUS SOUND ABSORBER |
| Payment date | Validity (years) | Amount | |
| 2023-05-03 | 4 | 92.00 EUR |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2024-11-21 |