US2555959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear reactance circuits utilizing high dielectric constant ceramics
Assignee: AT&T Inc
•
Filing: 1946-10-18
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Granted: 1951-06-05
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Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Curtis Lavalette Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:08
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H; H03; H03C; H03C1/00; H03C1/08; H03C1/12; H03C1/52; H03C1/54; H03C1/56; H03C3/00; H03C3/10; H03C3/12; H03C3/20
Claims Analysis
Total Claims: 0
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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) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |