Patent US3309601A successfully refreshed from Google Patents.
US3309601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel-diode low voltage static inverter
Assignee: Individual
•
Filing: 1963-11-07
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Granted: 1967-03-14
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Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 William L Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:22
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
A TUNNEL-DIODE STATIC INVERTER COMPRISING A TRANSFORMER HAVING A CENTER-TAPPED PRIMARY WINDING, AND A SECONDARY WINDING; A SOURCE OF DIRECT VOLTAGE; A FIRST TUNNEL-DIODE; A FIRST BLOCKING DIODE CONNECTED IN SERIES WITH SAID FIRST TUNNEL-DIODE, SAID SOURCE OF VOLTAGE, AND ONE HALF OF SAID PRIMARY WINDING; A SECOND TUNNEL-DIODE; A SECOND BLOCKING DIODE CONNECTED IN SERIES WITH SAID SOURCE OF VOLTAGE, SAID SECOND TUNNEL-DIODE, AND THE OTHER HALF OF SAID PRIMARY WINDING; MEANS FOR APPLYING A FIRST SOURCE OF PULSES ACROSS SAID FIRST BLOCKING DIODE; MEANS FOR APPLYING A SECOND SOURCE OF PULSES, ALTERNATING WITH THE PULSES OF SAID FIRST SOURCE, ACROSS SAID SECOND BLOCKING DIODE; AND MEANS FOR CONNECTING AN OUTPUT LOAD ACROSS SAID SECONDARY WINDING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |