US3496292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impedance correcting coil-loaded circuits
Assignee: Individual
•
Filing: 1966-08-22
•
Granted: 1970-02-17
•
Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Eric Waldelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:17
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475997A
Cited
US2371252A
Cited
US1243066A
Cited
US1601023A
Cited
US1772558A
Cited
US1733127A
Cited
US1837327A
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 |