US2606375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper for river bottoms
Assignee: United States Steel Corp
•
Filing: 1947-01-23
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Granted: 1952-08-12
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Expires: 1967-01-23
Abstract
No abstract record available.
Inventors
- 👤 Karl F Braun
- 👤 George T Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:05
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/28; E02F5/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |