US3081439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic delay lines
Assignee: CAPEHART CORP
•
Filing: 1959-06-19
•
Granted: 1963-03-12
•
Expires: 1979-06-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:23
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30; H03H7/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A DELAY LINE COMPRISING A PLURALITY OF CONCENTRICALLY DISPOSED HOLLOW CYLINDRICAL CORES NESTED WITHIN EACH OTHER, A FIRST ONE OF SAID CORES HAVING A COIL OF INSULATED WIRE WOUND LENGTHWISE THEREON, THE WINDINGS THEREOF EXTENDING ALONG THE INNER AND OUTER SURFACES OF SAID CORE AND ACROSS ITS ENDS, A SECOND ONE OF SAID CORES BEING A TUBULAR CAPACITOR HAVING INNER AND OUTER SURFACES THEREOF COATED WITH A METAL FILM, THE FILM ON THE SAID INNER SURFACE BEING IN CLOSE CONTACT WITH THE COIL, AND A THIRD ONE OF SAID CORES HAVING AN INNER SURFACE COATED WITH A
Claim 2
Dependent Claim
97 words
A DELAY LINE COMPRISING A PLURALITY OF CONCENTRICALLY DISPOSED HOLLOW CYLINDRICAL CORES NESTED WITHIN EACH OTHER, A FIRST ONE OF SAID CORES HAVING A COIL OF INSULATED WIRE WOUND LENGTHWISE THEREON, THE WINDINGS THEREOF EXTENDING ALONG THE INNER AND OUTER SURFACES OF SAID CORE AND ACROSS ITS ENDS, A SECOND ONE OF SAID CORES BEING A TUBULAR CAPACITOR HAVING INNER AND OUTER SURFACES THEREOF COATED WITH A METAL FILM, THE FILM ON THE SAID INNER SURFACE BEING IN CLOSE CONTACT WITH THE COIL, AND A THIRD ONE OF SAID CORES HAVING AN INNER SURFACE COATED WITH A
References Cited (Backward Citations)
US845609A
Cited
US2258261A
Cited
US2387783A
Cited
US2467857A
Cited
US2781495A
Cited
US2619537A
Cited
US2768357A
Cited
US2897294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |