US3478449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavating bucket digging blade
Assignee: Individual
•
Filing: 1967-02-07
•
Granted: 1969-11-18
•
Expires: 1987-02-07
Abstract
No abstract record available.
Inventors
- 👤 Alfred Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:56
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/401; E02F3/96; E02F3/962
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1189587A
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US1872307A
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US1963847A
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US2211786A
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US2227674A
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US2262415A
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US2707343A
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US3043032A
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US3014606A
Cited
US3160967A
Cited
US3375597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |