US2796520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for portable receiver
Assignee: Individual
•
Filing: 1951-12-27
•
Granted: 1957-06-18
•
Expires: 1971-12-27
Abstract
No abstract record available.
Inventors
- 👤 Kreithen Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:19
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1607; H04B1/1623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1615098A
Cited
US1867667A
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US1957016A
Cited
US2236066A
Cited
US2273709A
Cited
US2313915A
Cited
US2432033A
Cited
US2605407A
Cited
US2575059A
Cited
US2505185A
Cited
US2556027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |