US2714775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trench
Assignee: —
•
Filing: —
•
Granted: 1955-08-09
•
Expires: 1972-08-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:10
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/22; E02F5/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1532723A
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US1574230A
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US1567495A
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US1677342A
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US2109393A
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US2064022A
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US2132790A
Cited
FR913047A
Cited
US2482213A
Cited
US2402976A
Cited
US2567107A
Cited
US2473655A
Cited
US2527840A
Cited
US2514764A
Cited
US2589553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |