US2762136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic dredge ladder
Assignee: Individual
•
Filing: 1953-01-02
•
Granted: 1956-09-11
•
Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Bell Leroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:11
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9212; E02F9/00; E02F9/06; E02F9/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US185600A
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US328095A
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US629910A
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US786253A
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US1019610A
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US1619850A
Cited
US1713037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |