Patent US3277451A successfully refreshed from Google Patents.
US3277451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide angle broad band hydrophone array
Assignee: Individual
•
Filing: 1963-11-21
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Granted: 1966-10-04
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Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Parssinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:39
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32; G01; G01S; G01S3/00; G01S3/80; G01S3/801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A WIDE-ANGLE BROADBAND HYDROPHONE ARRAY COMPISING: A PLURALITY OF COAXIAL CYLINDRICAL HYDROPHONES, EACH HYDROPHONE TERMINATING IN OPPOSED FLAT ENDS NORMAL TO THE AXIS, SOFT ELASTOMERIC MATERIAL SPACING ADJACENT HYDROPHONES FROM EACH OTHER, ONE END OF EACH OF SAID HYDROPHONES BEING SUBSTANTIALLY COPLANAR, A BASE FOR SAID HYDROPHONES, PRESSURE RELEASE MATERIAL SPACING THE BASE AND THE OTHER ENDS OF THE HYDROPHONES, AND MEANS SECURING TOGETHER AND WATERPROOFING SAID HYDROPHONES, PRESSURE RELEASE MATERIAL AND BASE, AND OP-
Claim 2
Dependent Claim
75 words
A WIDE-ANGLE BROADBAND HYDROPHONE ARRAY COMPISING: A PLURALITY OF COAXIAL CYLINDRICAL HYDROPHONES, EACH HYDROPHONE TERMINATING IN OPPOSED FLAT ENDS NORMAL TO THE AXIS, SOFT ELASTOMERIC MATERIAL SPACING ADJACENT HYDROPHONES FROM EACH OTHER, ONE END OF EACH OF SAID HYDROPHONES BEING SUBSTANTIALLY COPLANAR, A BASE FOR SAID HYDROPHONES, PRESSURE RELEASE MATERIAL SPACING THE BASE AND THE OTHER ENDS OF THE HYDROPHONES, AND MEANS SECURING TOGETHER AND WATERPROOFING SAID HYDROPHONES, PRESSURE RELEASE MATERIAL AND BASE, AND OP-
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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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |