US3517338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duo-binary frequency modulators
Assignee: Plessey Overseas Ltd
•
Filing: 1966-11-21
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Granted: 1970-06-23
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph Bertrand Herman
- 👤 William Renwick
- 👤 Leonard Charles Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:31
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/32; H03; H03C; H03C3/00; H03C3/38; H03C3/40; H04L27/02; H04L27/04; H04L27/10; H04L27/14; H04L27/144; H04L27/152; H04L27/1525; H04L27/18; H04L27/20; H04L27/2003; H04L27/2007; H04L27/2014
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) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |