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Patent US2539670A successfully refreshed from Google Patents.
US2539670A
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US
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Method for the construction of a cutoff wall
Assignee: Individual
•
Filing: 1946-09-05
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Granted: 1951-01-30
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Expires: 1966-09-05
Abstract
No abstract record available.
Inventors
- 👤 Ognibene Tito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:32
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189811268A
Cited
US969343A
Cited
US1447254A
Cited
US1665798A
Cited
US1829463A
Cited
US2090720A
Cited
US2329223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |