Patent US3406330A successfully refreshed from Google Patents.
US3406330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relaxation inverter circuits with switching control
Assignee: Siemens Mobility Ltd
•
Filing: 1965-03-08
•
Granted: 1968-10-15
•
Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Pelly Brian Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:24
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/523; H02M7/5233; H02M7/5236; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/27
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3058252A
Cited
US3139588A
Cited
US3218577A
Cited
US3243729A
Cited
US3290581A
Cited
US3316476A
Cited
US3218576A
Cited
US3273077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |