US2713658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply filter network
Assignee: Individual
•
Filing: 1946-11-26
•
Granted: 1955-07-19
•
Expires: 1966-11-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Varela
- 👤 Robert C Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:30
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/543
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2579525A
Cited
US2394389A
Cited
US2465407A
Cited
US2420200A
Cited
US2438907A
Cited
US2470550A
Cited
US2466705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |