US2648145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless bucket chain structure for trenching machines
Assignee: Cleveland Trencher Co
•
Filing: 1950-05-25
•
Granted: 1953-08-11
•
Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 Albert R Askue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:54
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US328407A
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US332042A
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US1108268A
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US1217752A
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US1484841A
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US1762568A
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US1717476A
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US1832787A
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US2311834A
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US2526176A
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US2584287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |