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Patent US2991419A successfully refreshed from Google Patents.
US2991419A
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Method of and an apparatus for recording a variable voltage
Assignee: Saab Bofors AB
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Filing: 1957-04-18
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Granted: 1961-07-04
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Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Evald Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:52
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733358A
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US2258311A
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US2604955A
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US2485343A
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US2525891A
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US2754475A
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US2681382A
Cited
US2731202A
Cited
US2881416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |