US3409869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep submergence acoustic transducer array construction
Assignee: United States Department of the Navy
•
Filing: 1965-07-21
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Granted: 1968-11-05
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Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 John M Mccool
- 👤 Shelby F Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:53
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2380931A
Cited
US2760181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |