US3421111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage controlled field-effect transistor l-c oscillator
Assignee: United States Department of the Navy
•
Filing: 1967-08-29
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Granted: 1969-01-07
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Expires: 1987-08-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph Jacob Boyajian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:10
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1228; H03B5/1203; H03B5/1237; H03B5/124; H03B5/1243; H03B5/1293; H03B2200/00; H03B2200/003; H03B2200/004; H03B2201/00; H03B2201/02; H03B2201/0208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3281699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |