US3415330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroacoustic apparatus
Assignee: Hydroacoustics Inc
•
Filing: 1967-02-10
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Granted: 1968-12-10
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Expires: 1987-02-10
Abstract
No abstract record available.
Inventors
- 👤 John V Bouyoucos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:41
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/06; E21B10/00; E21B10/08; E21B10/18; E21B7/00; E21B7/18; E21B7/24
Claims Analysis
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References Cited (Backward Citations)
US2713472A
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US2982255A
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US3094176A
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US3018834A
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US3163240A
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US3346058A
Cited
US3371726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |