US3289866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back hoe dipper attachment for digging laterally sloped excavations
Assignee: Individual
•
Filing: 1965-02-23
•
Granted: 1966-12-06
•
Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Norman B Emery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:42
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/3604; E02F3/3677
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2496696A
Cited
US2927706A
Cited
DE1142320B
Cited
US3033394A
Cited
US3027026A
Cited
US3231116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |