Patent US3418624A successfully refreshed from Google Patents.
US3418624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxially mounted line hydrophone
Assignee: MASSA DONALD P COHASSET
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Filing: 1967-03-27
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Granted: 1968-12-24
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Expires: 1987-03-27
Abstract
No abstract record available.
Inventors
- 👤 Massa Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/20; G01V1/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3286227A
Cited
US2788513A
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US2762032A
Cited
US2837731A
Cited
US3277436A
Cited
US3139603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |