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Patent US2997117A successfully refreshed from Google Patents.
US2997117A
Expired / Lapsed
US
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Support mechanism for tractor tool bars
Assignee: Individual
•
Filing: 1958-05-02
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Granted: 1961-08-22
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Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Howard A Paige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:46
CPC Classifications
A; A01; A01B; A01B59/00; A01B35/00; A01B35/02; A01B35/10; A01B35/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1827123A
Cited
US1797476A
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US1946402A
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US2063051A
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US2131872A
Cited
US2171830A
Cited
US2449159A
Cited
US2444321A
Cited
US2747484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |