US3113288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersensitive shielded crystal hydrophone
Assignee: Individual
•
Filing: 1960-10-21
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Granted: 1963-12-03
•
Expires: 1980-10-21
Abstract
No abstract record available.
Inventors
- 👤 Benjamin L Snavely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:00
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; B06B1/0618
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A SUPERSENSITIVE CRYSTAL HYDROPHONE COMPRISING A METALLIC CASING, A STACK OF PIEZO-ELECTRIC CRYSTAL ELEMENTS ARRANGED WITHIN SAID CASING, FLEXIBLE DIAPHRAGM MEANS SECURED TO SAID CASING AND SUPPORTING SAID ELEMENTS IN A MANNER TO APPLY PRESSURE THERETO VARIABLY IN ACCORDANCE WITH SIGNALS RECEIVED THEREBY THROUGH THE WATER WITHIN WHICH THE HYDROPHONE IS IMMERSED, AN ELECTROSTATIC SHIELD WITHIN SAID CASING AND CARRIED THEREBY, SAID SHIELD ENCLOSING SAID CRYSTAL ELEMENTS, MEANS INSULATING SAID SHIELD FROM SAID CASING, AND MEANS INCLUDING A SUBMARINE CABLE FOR PROVIDING A PLURALITY OF EXTERNAL ELECTRICAL CONNECTIONS TO SAID CRYSTAL ELEMENTS AND TO SAID SHIELD.
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |