US2454475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper
Assignee: Individual
•
Filing: 1943-09-15
•
Granted: 1948-11-23
•
Expires: 1963-09-15
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:09
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/657; E02F3/6454; E02F3/6463; E02F3/656
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US468393A
Cited
US1622085A
Cited
US999857A
Cited
US1860805A
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US1817985A
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US2060369A
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US2215026A
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US2229241A
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US2255062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |