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Patent US2498907A successfully refreshed from Google Patents.
US2498907A
Expired / Lapsed
US
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Radio frequency shielded switch
Assignee: RCA Corp
•
Filing: 1943-10-30
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Granted: 1950-02-28
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Expires: 1963-10-30
Abstract
No abstract record available.
Inventors
- 👤 John B Atwood
- 👤 Ferdinand J W Schoenborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US520794A
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US1318131A
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US1318737A
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US1882114A
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US736816A
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US687829A
Cited
US1729755A
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US1846344A
Cited
FR852646A
Cited
US2235010A
Cited
US2344780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |