US3384828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shifting circuits
Assignee: International Standard Electric Corp
•
Filing: 1965-09-16
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Granted: 1968-05-21
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Pierre Jacques Barthelemy
- 👤 Schneider Marc Jules Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:10
CPC Classifications
H; H03; H03B; H03B27/00; G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/043; H03H; H03H11/00; H03H11/02; H03H11/16; H03H11/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |