US2928251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination irrigation drop and dam
Assignee: Individual
•
Filing: 1956-04-13
•
Granted: 1960-03-15
•
Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Waring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
E; E02; E02B; E02B13/00; E02B13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US602973A
Cited
US605806A
Cited
US1999453A
Cited
US937728A
Cited
US1206938A
Cited
US1579288A
Cited
US1561796A
Cited
FR758703A
Cited
US2103600A
Cited
US2097544A
Cited
US2525517A
Cited
US2530747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |