US3159801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase modulator
Assignee: GTE Sylvania Inc
•
Filing: 1961-02-15
•
Granted: 1964-12-01
•
Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Warren C Wiedemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:56
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/22; H03C3/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2925561A
Cited
US2964637A
Cited
US2951212A
Cited
US2925563A
Cited
US2984794A
Cited
US3105205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |