US2263028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dirt handling device
Assignee: Individual
•
Filing: 1940-02-24
•
Granted: 1941-11-18
•
Expires: 1960-02-24
Abstract
No abstract record available.
Inventors
- 👤 Laferd F Brownell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:57
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/652; B; B62; B62D; B62D49/00; B62D49/06; B62D49/0621; B62D49/0635; E02F3/6409; E02F3/6436; E02F3/654; E02F3/656
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) | 1944-11-17 | 1945-05-19 | 1945-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-17 | 1949-05-19 | 1949-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-17 | 1953-05-19 | 1953-11-18 | $7700.00 | Window Closed / Lapsed |