US2948818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonator circuits
Assignee: Zaidan Hojin Parametron Kenkyusho (Parametron)
•
Filing: 1955-05-16
•
Granted: 1960-08-09
•
Expires: 1975-05-16
Abstract
No abstract record available.
Inventors
- 👤 Meguro-Ku Eiichi Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:48
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/12; H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/162; H03K19/164; H03K3/00; H03K3/02; H03K3/45; H03K3/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1544381A
Cited
US1788533A
Cited
US2822480A
Cited
US2697178A
Cited
US2770739A
Cited
US2709757A
Cited
US2815488A
Cited
US2721947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |