US3376388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct-current-coupled transistor power amplifiers
Assignee: Individual
•
Filing: 1967-05-10
•
Granted: 1968-04-02
•
Expires: 1987-05-10
Abstract
No abstract record available.
Inventors
- 👤 Martin G Reiffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:25
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03F3/30; H03F3/3081; H03F3/3083; H03F3/3086; H03F3/3091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |