Patent US3481056A successfully refreshed from Google Patents.
US3481056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor blade-bucket
Assignee: JAMES H WHIPPLE
•
Filing: 1966-12-29
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Granted: 1969-12-02
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Expires: 1986-12-29
Abstract
No abstract record available.
Inventors
- 👤 William H Meade
- 👤 James H Whipple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:34
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/28; E02F3/36; E02F3/40; E02F3/401; E02F3/6454; E02F3/6463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1786448A
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US2029122A
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US2263028A
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US2284215A
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US2483033A
Cited
US2451101A
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US2663099A
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US2691228A
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US3065556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |