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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
B02C 18/06 |
| (11) | Number of the document | 2044 |
| (13) | Kind of document | B |
| (21) | Application number | RP252 |
| (22) | Date of filing the application | 1992-12-22 |
| (41) | Date of publication of the application | |
| (45) | Date of publication of patent | 1993-05-15 |
| (86) | Number | 1687024 |
| Date | 1988-09-09 |
| (30) | Number | Date | Country code |
| 37 32 237.0 | 1987-09-24 | DE |
| (71) |
G.Walter Steffens GmbH & Co.,
Unterhoelterfelder Str. 60, W-5630 Remscheid 1,
DE
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| (72) |
Michael STEFFENS, DE
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| (73) |
G.Walter Steffens GmbH & Co.,
Unterhoelterfelder Str. 60, W-5630 Remscheid 1,
DE
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| (74) |
Liudmila GERASIMOVIČ,
IĮ "Liudmila Gerasimovič, Patentinis patikėtinis", Vingrių g. 13-42, LT-01141 Vilnius,
LT
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| (54) |
| Payment date | Validity (years) | Amount | |
| 1993-12-06 | 4 | 120.00 USD |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 1994-12-22 |