US3609979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flood control method and apparatus
Assignee: Individual
•
Filing: 1969-11-21
•
Granted: 1971-10-05
•
Expires: 1989-11-21
Abstract
Abstract FLOOD CONTROL METHOD AND APPRATUS UTILIZE TUBULAR BODIES WITH CENTRALLY LOCATED IMPELLERS WHICH ARE PLACED IN A WATERWAY IN THE VICINITY OF A FLOODED LOCATION WHERE THE IMPELLERS PROMOTE THE FLOW OF WATER AWAY FROM THE FLOODED LOCATION.
Inventors
- 👤 Michael Lukawsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:26
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |