US2668942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply voltage regulator
Assignee: Individual
•
Filing: 1945-08-06
•
Granted: 1954-02-09
•
Expires: 1965-08-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Varela
- 👤 Jr Robert A Herring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1687474A
Cited
US1753921A
Cited
US1755111A
Cited
US1734915A
Cited
US2033071A
Cited
FR809604A
Cited
US2363898A
Cited
GB577448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |