US2577938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary blade power lawn mower
Assignee: Individual
•
Filing: 1947-04-28
•
Granted: 1951-12-11
•
Expires: 1967-04-28
Abstract
No abstract record available.
Inventors
- 👤 Sr Charles Walte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:53
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1899564A
Cited
US1849953A
Cited
US1880154A
Cited
US2017524A
Cited
US2154564A
Cited
US2403236A
Cited
US2518093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |