US2968767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced circuits having improved balance
Assignee: Hazeltine Research Inc
•
Filing: 1957-02-25
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Granted: 1961-01-17
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 John R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:12
CPC Classifications
H; H03; H03D; H03D13/00; H03D13/007; H03D13/009; H03F; H03F1/00; H03F1/08; H04; H04N; H04N9/00; H04N9/44; H04N9/455
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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |