Patent US5597519A successfully refreshed from Google Patents.
Patent US3230502A successfully refreshed from Google Patents.
US3230502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single air gap underwater transducer array
Assignee: Individual
•
Filing: 1961-10-11
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Granted: 1966-01-18
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Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 Chervenak John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:15
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ARRAY OF TRANSDUCERS WHEREIN EACH OF SAID TRANSDUCERS COMPRISES; A HOLLOW RIGID HOUSING HAVING FIRST AND SECOND OPPOSED WALLS, A NON-RADIATIING MASS WITHIN SAID HOUSING SPRING MOUNTED ON SAID FIRST WALL AND SPACED FROM SAID SECOND WALL, A MAGNETIC CIRCUIT INCLUDING FIRST AND SECOND MAGNETIC CORES SPACED TO FORM A FLUX PATH WITH AN AIR GAP, SAID FIRST CORE BEING MOUNTED ON SAID MASS, SAID SECOND CORE BEING MOUNTED ON SAID FIRST WALL, AND A WIND-
Claim 2
Dependent Claim
77 words
AN ARRAY OF TRANSDUCERS WHEREIN EACH OF SAID TRANSDUCERS COMPRISES; A HOLLOW RIGID HOUSING HAVING FIRST AND SECOND OPPOSED WALLS, A NON-RADIATIING MASS WITHIN SAID HOUSING SPRING MOUNTED ON SAID FIRST WALL AND SPACED FROM SAID SECOND WALL, A MAGNETIC CIRCUIT INCLUDING FIRST AND SECOND MAGNETIC CORES SPACED TO FORM A FLUX PATH WITH AN AIR GAP, SAID FIRST CORE BEING MOUNTED ON SAID MASS, SAID SECOND CORE BEING MOUNTED ON SAID FIRST WALL, AND A WIND-
References Cited (Backward Citations)
US1604693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |