US2889684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated irrigation gate
Assignee: Individual
•
Filing: 1955-08-04
•
Granted: 1959-06-09
•
Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 William D Abrahams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:06
CPC Classifications
E; E02; E02B; E02B7/00; E02B7/20; E02B7/26; E02B7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1062635A
Cited
DE336399C
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US1370894A
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US1889439A
Cited
US2055512A
Cited
US2485755A
Cited
US2637171A
Cited
US2611937A
Cited
US2697913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |