Patent US2674818A successfully refreshed from Google Patents.
US2674818A
Expired / Lapsed
US
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Digging attachment for bulldozers
Assignee: Individual
•
Filing: 1948-10-18
•
Granted: 1954-04-13
•
Expires: 1968-10-18
Abstract
No abstract record available.
Inventors
- 👤 Carnes Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:56
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/815; E02F3/8155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US331358A
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US1607227A
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US2042196A
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US2302702A
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US2171830A
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US2222071A
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US2281928A
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US2279869A
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US2262415A
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US2297677A
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US2371540A
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US2521045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |