US2912774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable ripper tooth
Assignee: Individual
•
Filing: 1955-05-27
•
Granted: 1959-11-17
•
Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Homer T Mccrary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:27
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2875; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/815; E02F3/8152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US694351A
Cited
US1072313A
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US2042196A
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US2246787A
Cited
US2246793A
Cited
FR991748A
Cited
US2486372A
Cited
US2475710A
Cited
US2657914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |