US3020922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flood control unit
Assignee: Individual
•
Filing: 1957-12-09
•
Granted: 1962-02-13
•
Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Levi I Oury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:19
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/70; F04D29/708; E; E03; E03F; E03F5/00; E03F5/22; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2582; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/6988
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1233391A
Cited
US2421066A
Cited
US2431640A
Cited
US2549204A
Cited
US2739662A
Cited
US2844163A
Cited
US2868380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |