|
|
|
|
|
Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2022.01) |
B23K 11/00 |
| (11) | Number of the document | 6880 |
| (13) | Kind of document | B |
| (21) | Application number | 2021 522 |
| (22) | Date of filing the application | 2021-05-18 |
| (41) | Date of publication of the application | 2021-11-25 |
| (45) | Date of publication of patent | 2022-01-10 |
| (71) |
Dezhou University,
No. 566, University West Road, Decheng District, Dezhou, Shandong,
CN
|
| (72) |
Haorui Liu, CN
|
| (73) |
Dezhou University,
No. 566, University West Road, Decheng District, Dezhou,
CN
|
| (74) |
Reda ŽABOLIENĖ,
METIDA, Verslo centras "VERTAS", Gynėjų g. 16, LT-01109 Vilnius,
LT
|
| (54) | A HIGH-EFFICIENCY WELDING DEVICE FOR RV REDUCER SHELL PRODUCTION |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2023-05-18 |