US2501352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling means for operating an electronic oscillograph to produce a record
Assignee: Westinghouse Electric Corp
•
Filing: 1944-11-16
•
Granted: 1950-03-21
•
Expires: 1964-11-16
Abstract
No abstract record available.
Inventors
- 👤 Alert M Opsahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:28
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR641461A
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US2020917A
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US1960333A
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US2406856A
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US2328461A
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US2399695A
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US2430538A
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US2415059A
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US2436148A
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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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |