US2883109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for making any desired frequency characteristic circuit
Assignee: KDDI Corp
•
Filing: 1955-08-29
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Granted: 1959-04-21
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Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 Oshima Shintaro
- 👤 Enomoto Hajime
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:54
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1928; G06G7/48; G06G7/62; G06G7/623; H; H03; H03H; H03H15/00; H03H17/00; H03H17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |