US2488508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio centercasting selection apparatus
Assignee: Individual
•
Filing: 1942-06-05
•
Granted: 1949-11-15
•
Expires: 1962-06-05
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:19
CPC Classifications
H; H04; H04H; H04H60/00; H04H60/35; H04H60/38; H04H60/41; H04H60/44; H04H60/76; H04H60/78; H04H60/79
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2092120A
Cited
US1005555A
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US1990489A
Cited
US2206702A
Cited
US2096109A
Cited
US2188165A
Cited
US2249324A
Cited
US2354836A
Cited
US2427670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |