US2972114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier circuit
Assignee: Motorola Solutions Inc
•
Filing: 1957-12-23
•
Granted: 1961-02-14
•
Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Silberbach Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:46
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/307; H03F3/00; H03F3/26; H03F5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924469A
Cited
US2680160A
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US2778884A
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US2810024A
Cited
US2808471A
Cited
US2831114A
Cited
US2823312A
Cited
US2915600A
Cited
US2810071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |