US2551861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trash sweeper
Assignee: Individual
•
Filing: 1945-12-22
•
Granted: 1951-05-08
•
Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Witte Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:21
CPC Classifications
A; A01; A01D; A01D78/00; A01D78/02; A01D78/04; A01D43/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1296227A
Cited
US1435293A
Cited
US1348605A
Cited
DE356859C
Cited
US1629321A
Cited
CH190917A
Cited
US2259724A
Cited
US2265405A
Cited
US2296065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |