Patent US3437932A successfully refreshed from Google Patents.
US3437932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fsk receiver wherein one binary signal is represented by a half cycle of a given frequency and the other binary signal is represented by a full cycle of twice that frequency
Assignee: Collins Radio Co
•
Filing: 1967-10-30
•
Granted: 1969-04-08
•
Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Louis Malakoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:50
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/10; H04L27/14; H04L27/156; H04L27/1563
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |