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US2642948A
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US
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Portable radio with a bass-reflex cabinet
Assignee: RCA Corp
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Filing: 1948-05-28
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Granted: 1953-06-23
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Expires: 1968-05-28
Abstract
No abstract record available.
Inventors
- 👤 Harry F Olson
- 👤 Preston John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:52
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2815; H04R1/2819; H04R1/2861; H04R1/2865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1759610A
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US1741274A
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US1869178A
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US1920631A
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US1936396A
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US2224919A
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US2286742A
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US2539327A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |