US2671282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless bucket conveyer ditch digging machine
Assignee: LONGHORN IND Inc
•
Filing: 1948-08-31
•
Granted: 1954-03-09
•
Expires: 1968-08-31
Abstract
No abstract record available.
Inventors
- 👤 Almus H Gardner
- 👤 Charles W Pewthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:31
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US180809A
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US333114A
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US1363711A
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US1428055A
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US1577546A
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US1717476A
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CH240409A
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US2480909A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |