Patent US2718185A successfully refreshed from Google Patents.
US2718185A
Expired / Lapsed
US
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Rotary cultivator shield
Assignee: Individual
•
Filing: 1952-07-08
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Granted: 1955-09-20
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Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph P Shawd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
A; A01; A01B; A01B39/00; A01B39/20; A01B39/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US892465A
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US1453891A
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US1563291A
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US1835095A
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US1880584A
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US2355519A
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US2406500A
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US2433199A
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US2447354A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |