US2459988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-frequency oscillator power supply circuits
Assignee: Amalgamated Wireless Australasia Ltd
•
Filing: 1945-06-12
•
Granted: 1949-01-25
•
Expires: 1965-06-12
Abstract
No abstract record available.
Inventors
- 👤 Boadle Ronald Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:35
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US867579A
Cited
US1645215A
Cited
US1709866A
Cited
US1682730A
Cited
US2120002A
Cited
US2210699A
Cited
US2246318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |