US3496497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-power harmonic suppression filters
Assignee: International Standard Electric Corp
•
Filing: 1964-11-20
•
Granted: 1970-02-17
•
Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 Stanley William Conning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:42
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/212; H01P1/16; H01P1/162
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2106768A
Cited
US2877434A
Cited
US2961619A
Cited
US3230481A
Cited
US3160826A
Cited
US3221205A
Cited
US3353123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |