US3824505A
Expired / Lapsed
US
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Electromechanical delay line wherein core exhibits higher mean refractive index than envelope
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1972-04-28
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Granted: 1974-07-16
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Expires: 1992-04-28
Abstract
Abstract A DELAY LINE COMPOSED OF A FILMENTARY CORE CAPABLE OF SUPPORTING THE PROPAGATION OF MECHANICAL ENEGERY AND A SURROUNDING ENVELOPE. THE MATERIAL OF THE CORE AND THE ENVELOPE ARE SUCH THAT THE CORE EXHIBITS A MEAN REFRACTIVE INDEX FOR THE MECHANICAL ENERGY WHICH IS HIGHER THAN THAT OF THE ENVELOPE. D R A W I N G
Inventors
- 👤 M Borner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:15
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |