US3385392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic siren applied on seagoing ships for defogging the ranges of vision
Assignee: Individual
•
Filing: 1966-09-06
•
Granted: 1968-05-28
•
Expires: 1986-09-06
Abstract
No abstract record available.
Inventors
- 👤 Vios Michalis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:32
CPC Classifications
G; G10; G10K; G10K7/00; G10K7/005; E; E01; E01H; E01H13/00; G10K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |