US2546591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-voltage power supply
Assignee: BELMONT RADIO Corp
•
Filing: 1947-11-12
•
Granted: 1951-03-27
•
Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 Robertson R Gannaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:54
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)
US1238869A
Cited
US2070900A
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US2234895A
Cited
US2306888A
Cited
US2276332A
Cited
US2374781A
Cited
US2443125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |