Patent US606460A successfully refreshed from Google Patents.
US3296582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater listening aid for submerged personnel
Assignee: Individual
•
Filing: 1946-07-23
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Granted: 1967-01-03
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Expires: 1966-07-23
Abstract
No abstract record available.
Inventors
- 👤 John M Ide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:02
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
AN UNDERWATER LISTENING DEVICE FOR SUBMERGED PERSONNEL, COMPRISING A STRIP OF MATERIAL HAVING A SUBSTANTIALLY UNIFORM WIDTH AND AN ACOUSTIC IMPEDANCE LOWER THAN THAT OF WATER ARRANGED TO EXTEND FORE AND AFT ALONG THE TOP OF THE HEAD OF A PERSON SUBSTANTIALLY FROM THE FOREHEAD TO THE BASE OF THE SKULL AND LIMITED IN ITS LATERAL EXTENT TO OMIT COVERAGE OF THE EARS AND SIDES OF THE HEAD, AND MEANS FOR HOLDING SAID STRIP IN POSITION.
Claim 2
Dependent Claim
76 words
AN UNDERWATER LISTENING DEVICE FOR SUBMERGED PERSONNEL, COMPRISING A STRIP OF MATERIAL HAVING A SUBSTANTIALLY UNIFORM WIDTH AND AN ACOUSTIC IMPEDANCE LOWER THAN THAT OF WATER ARRANGED TO EXTEND FORE AND AFT ALONG THE TOP OF THE HEAD OF A PERSON SUBSTANTIALLY FROM THE FOREHEAD TO THE BASE OF THE SKULL AND LIMITED IN ITS LATERAL EXTENT TO OMIT COVERAGE OF THE EARS AND SIDES OF THE HEAD, AND MEANS FOR HOLDING SAID STRIP IN POSITION.
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |