Patent US2434264A successfully refreshed from Google Patents.
US2434264A
Expired / Lapsed
US
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Cathode-ray oscilloscope circuit with timing marks
Assignee: AT&T Inc
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Filing: 1944-10-17
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Granted: 1948-01-13
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Expires: 1964-10-17
Abstract
No abstract record available.
Inventors
- 👤 James O Edson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
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)
USRE22328E
Cited
US2084760A
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US2132655A
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US2137123A
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USRE22390E
Cited
US2312761A
Cited
US2280524A
Cited
US2313966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |