Patent US2879853A successfully refreshed from Google Patents.
US2879853A
Expired / Lapsed
US
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Two-way reversible ground working apparatus
Assignee: Individual
•
Filing: 1955-10-25
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Granted: 1959-03-31
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Expires: 1975-10-25
Abstract
No abstract record available.
Inventors
- 👤 Seng James Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:55
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/46; A01B3/464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1427677A
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US2429463A
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US2659284A
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US2713296A
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US2658438A
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FR1073979A
Cited
FR1088573A
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US2788727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |