US3368641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound wave transmitting device
Assignee: IFP Energies nouvelles
•
Filing: 1965-01-21
•
Granted: 1968-02-13
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Cholet Jacques
- 👤 Fail Jean-Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:16
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104; F; F42; F42D; F42D3/00; F42D3/06; G01V1/38; G01V1/393; G08; G08B; G08B3/00; G08B3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2016838A
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US2316596A
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US2780196A
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US3002454A
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US2877859A
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US3022852A
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US3070010A
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US3125925A
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US3185093A
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US3274933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |