US2701281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier employing semiconductor
Assignee: International Standard Electric Corp
•
Filing: 1950-03-28
•
Granted: 1955-02-01
•
Expires: 1970-03-28
Abstract
No abstract record available.
Inventors
- 👤 White Charles De Boismaison
- 👤 Matthews Kenneth Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:29
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H03; H03F; H03F1/00; H03F1/30; H03F1/302; H03F3/00; H03F3/04; H03F3/14; H03K; H03K3/00; H03K3/02; H03K3/35; H10; H10D; H10D99/00; Y; Y10; Y10S; Y10S74/00; Y10S74/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2524035A
Cited
US2476323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |