US2866859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio amplifier bridge input circuits
Assignee: RCA Corp
•
Filing: 1955-07-11
•
Granted: 1958-12-30
•
Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas O Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/181; H03F3/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352931A
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US2435331A
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US2605409A
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US2571112A
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US2554279A
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US2657363A
Cited
US2721908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |