Patent US6626912B2 successfully refreshed from Google Patents.
US2579249A
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US
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Pressurized radio system
Assignee: RCA Corp
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Filing: 1946-04-30
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Granted: 1951-12-18
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Expires: 1966-04-30
Abstract
No abstract record available.
Inventors
- 👤 Waldon P Bollinger
- 👤 Frederick A Fuhrmeister
- 👤 Jr Justin E Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:29
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/08; G; G01; G01S; G01S7/00; G01S7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1866611A
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US2417052A
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US2376725A
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US2509231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |