US2284550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-leveling scraper blade
Assignee: Individual
•
Filing: 1940-08-03
•
Granted: 1942-05-26
•
Expires: 1960-08-03
Abstract
No abstract record available.
Inventors
- 👤 Christopher N Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/844; B; B60; B60R; B60R19/00; B60R19/54; E02F3/7622; E02F3/7631; Y; Y10; Y10S; Y10S37/00; Y10S37/907; Y10S56/00; Y10S56/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-05-25 | 1945-11-24 | 1946-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-25 | 1949-11-24 | 1950-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-25 | 1953-11-24 | 1954-05-26 | $7700.00 | Window Closed / Lapsed |