US2315445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated rectifier circuit
Assignee: AT&T Inc
•
Filing: 1940-08-31
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Granted: 1943-03-30
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Expires: 1960-08-31
Abstract
No abstract record available.
Inventors
- 👤 Louis E Milarta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:54
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/15; H02M7/151
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) | 1946-03-29 | 1946-09-28 | 1947-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-29 | 1950-09-28 | 1951-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-29 | 1954-09-28 | 1955-03-30 | $7700.00 | Window Closed / Lapsed |