Patent US894759A successfully refreshed from Google Patents.
Patent US3555461A successfully refreshed from Google Patents.
US3555461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial transmission line formed by coiling plural line foils and shorted screening foil
Assignee: International Standard Electric Corp
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Filing: 1967-09-29
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Granted: 1971-01-12
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Expires: 1987-09-29
Abstract
Abstract A WOUND UP LOW INDUCTANCE ARTIFICIAL LINE IS FORMED BY DEPOSITING RESISTIVE FILMS ON DIELECTRIC MATERIAL WHICH IS THEN WOUND UP, LIKE A ROLL-TYPE CAPACITOR, WITH A SCREENING CONDUCTOR BETWEEN EACH ADJACENT TURN OF THE ROLL. EACH TURN OF THE SCREENING CONDUCTOR IS SHORT-CIRCUITED TO ELIMINATE ITS INDUCTANCE. THE SCREENING CONDUCTOR MAY BE ANOTHER RESISTIVE FILM ON A DIELECTRIC WEB.
Inventors
- 👤 Frank Ralph
- 👤 John Llewellin Parmee
- 👤 David Boswell
- 👤 Frederick Ronald Huntley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:41
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G06G7/62; H; H01; H01P; H01P3/00; H04; H04B; H04B3/00; H04B3/02; H04B3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |