US3512284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back hoe tooth structure
Assignee: FREDDIE J HAYNES
•
Filing: 1969-06-02
•
Granted: 1970-05-19
•
Expires: 1989-06-02
Abstract
No abstract record available.
Inventors
- 👤 Freddie J Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:39
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/402; E02F3/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US309553A
Cited
GB189718543A
Cited
US1009254A
Cited
US2113420A
Cited
US3027027A
Cited
US3117386A
Cited
US3272559A
Cited
US3436849A
Cited
US3448535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |