Patent US2514622A successfully refreshed from Google Patents.
US2514622A
Expired / Lapsed
US
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Side-delivery shovel attachment for tractors
Assignee: Individual
•
Filing: 1948-03-15
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Granted: 1950-07-11
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Expires: 1968-03-15
Abstract
No abstract record available.
Inventors
- 👤 Robert E Boulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:16
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US798246A
Cited
US2181760A
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US2173158A
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US2387764A
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US2417595A
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US2445076A
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US2471192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |