US2758286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulated alternating current filter
Assignee: Individual
•
Filing: 1952-03-24
•
Granted: 1956-08-07
•
Expires: 1972-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul E Wible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:43
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/24; G05F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1773772A
Cited
US1956121A
Cited
US1985353A
Cited
US2037846A
Cited
US2154020A
Cited
US2591955A
Cited
US2505620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |