US3393375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuits for combining the power outputs of a plurality of negative resistance device oscillators
Assignee: AT&T Inc
•
Filing: 1966-10-14
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Granted: 1968-07-16
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Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 Mark R Barber
- 👤 Fukui Hatsuaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:35
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3243728A
Cited
US3243729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |