Patent US2568822A successfully refreshed from Google Patents.
US2568822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk type lawn mower
Assignee: Individual
•
Filing: 1949-12-08
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Granted: 1951-09-25
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Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 Pervis Ralph Emory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:57
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/74; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2198526A
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US2208972A
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US2188110A
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US2263368A
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US2259676A
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US2403236A
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US2485984A
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US2505377A
Cited
US2491544A
Cited
US2489730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |