US2883536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic phase control circuit
Assignee: Individual
•
Filing: 1958-03-05
•
Granted: 1959-04-21
•
Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 John D Salisbury
- 👤 Walter W Klein
- 👤 Calvin F Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:01
CPC Classifications
H; H05; H05H; H05H7/00; H05H7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2608654A
Cited
US2707751A
Cited
US2565231A
Cited
US2568250A
Cited
US2556978A
Cited
US2836759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |