Patent US3309652A successfully refreshed from Google Patents.
US3309652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater vibration detector
Assignee: Individual
•
Filing: 1946-03-12
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Granted: 1967-03-14
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Expires: 1966-03-12
Abstract
No abstract record available.
Inventors
- 👤 Horace M Trent
- 👤 Jr Thomas F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:10
CPC Classifications
B; B63; B63G; B63G7/00; B63G7/02; B63G7/08; G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A SYSTEM FOR GIVING AUDIBLE INDICATION OF CONTACT OF A SWEEP CABLE WITH A SUBMERGED OBJECT IN MINESWEEPING OPERATIONS, COMPRISING A METAL SWEEP CABLE TOWED BY A SHIP AND PARTIALLY SUBMERGED BY A DEPRESSOR, A FIRST MECHANICAL VIBRATION FILTER CLAMPED ON SAID SWEEP CABLE AFT OF THE JUNCTION OF SAID SWEEP CABLE WITH A LINE FROM SAID DEPRESSOR, A SECOND CABLE SECURED AT ONE END TO THE SHIP THROUGH A SECOND VIBRATION FILTER AND AT THE OTHER END TO A POINT ON THE SWEEP CABLE IN ACOUSTICAL CONTACT WITH THE LATTER AFT OF SAID FIRST MECHANICAL VIBRATION FILTER, AN ELECTROACOUSTIC PICKUP DEVICE ATTACHED TO SAID SECOND METAL CABLE, AN AMPLIFIER OPERATIVELY CONNECTED TO THE PICKUP DEVICE, AND AN INDICATING MEANS OPERATIVELY CONNECTED WITH SAID AMPLIFIER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |