US2333211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator
Assignee: AT&T Inc
•
Filing: 1942-07-01
•
Granted: 1943-11-02
•
Expires: 1962-07-01
Abstract
No abstract record available.
Inventors
- 👤 Bruce E Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:53
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/02; B67C3/06; B67C3/22; B67C3/26; B67C3/2614; G; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06
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) | 1946-11-01 | 1947-05-03 | 1947-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-01 | 1951-05-03 | 1951-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-01 | 1955-05-03 | 1955-11-02 | $7700.00 | Window Closed / Lapsed |