US2538525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-case portable receiver
Assignee: RCA Corp
•
Filing: 1947-06-10
•
Granted: 1951-01-16
•
Expires: 1967-06-10
Abstract
No abstract record available.
Inventors
- 👤 Dominic M Kaltenbacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:37
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/08; H04B1/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE604353C
Cited
US1821236A
Cited
US1673249A
Cited
US1763459A
Cited
US2137035A
Cited
US2322126A
Cited
US2419577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |