US3538697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of and apparatus for manufacturing improved high-frequency cables
Assignee: AT&T Inc
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Filing: 1968-08-30
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Granted: 1970-11-10
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Expires: 1988-08-30
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Hornor
- 👤 William J Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:40
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/02; H01B13/0214; H01B11/00; H01B11/18; H01B11/20; H01B13/016; H01P; H01P11/00; H01P11/001; H01P11/005; D; D07; D07B; D07B2301/00; D07B2301/15; D07B2301/35; D07B2301/3591; D07B2301/40; D07B2301/4091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |