US3364439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency corrected digital clock with memory in phase control loop
Assignee: TELE SIGNAL CORP
•
Filing: 1966-10-07
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Granted: 1968-01-16
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Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Peter J Cohen
- 👤 Philip W Ackerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:07
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/033; H04L7/0331; G; G04; G04G; G04G7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3142802A
Cited
US3218560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |