US2576100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage stabilizing system and tube
Assignee: Research Corp
•
Filing: 1945-07-13
•
Granted: 1951-11-27
•
Expires: 1965-07-13
Abstract
No abstract record available.
Inventors
- 👤 Sanborn C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1747050A
Cited
US1760525A
Cited
US2318644A
Cited
US2323857A
Cited
US2362769A
Cited
US2372432A
Cited
DK63383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |