US3409845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulating circuit utilizing variable capacity diodes
Assignee: Fujitsu Ltd
•
Filing: 1967-03-06
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Granted: 1968-11-05
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Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Ogi Masaka
- 👤 Sekizawa Tadashi
- 👤 Tatsusaburo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:39
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/22; H03C3/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3290618A
Cited
US3333215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |