US2918627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-compensated directcurrent amplifier
Assignee: TDK Micronas GmbH
•
Filing: 1954-11-30
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Granted: 1959-12-22
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Expires: 1974-11-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Denz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:57
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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |