US2970279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting circuit
Assignee: Individual
•
Filing: 1957-10-21
•
Granted: 1961-01-31
•
Expires: 1977-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward P Donnelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:54
CPC Classifications
H; H03; H03L; H03L3/00; H04; H04B; H04B1/00; H04B1/02; H04B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1110548A
Cited
US2440861A
Cited
US2600330A
Cited
US2703053A
Cited
GB740670A
Cited
US2697216A
Cited
US2882520A
Cited
US2783384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |