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US2416290A
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Cathode-ray oscilloscope circuit
Assignee: AT&T Inc
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Filing: 1942-10-02
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Granted: 1947-02-25
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Expires: 1962-10-02
Abstract
No abstract record available.
Inventors
- 👤 Wallace A Depp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:18
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20945E
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US1933219A
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US2151313A
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US2143397A
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US2182555A
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US2121359A
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US2222943A
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US2234830A
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US2219188A
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US2269226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |