US3069861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sluice dam sealing means
Assignee: Beteiligungs und Patentverwaltungs GmbH
•
Filing: 1958-09-30
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Granted: 1962-12-25
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Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 Berke Hans Joachim Otto
- 👤 Marijan Ludwig M Kozelj
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:11
CPC Classifications
E; E02; E02B; E02B7/00; E02B7/20; E02B7/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2097352A
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AT159232B
Cited
US2683354A
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FR1108128A
Cited
FR1082128A
Cited
DE1026696B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |