US3430215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gain level stepping system
Assignee: Unisys Corp
•
Filing: 1964-07-13
•
Granted: 1969-02-25
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Kenneth D Krossa
- 👤 Michael I Behr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:31
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/10009; G11B5/00; G11B5/012; H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3005; H03G3/3026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2239042A
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US2320429A
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US2528457A
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US2807797A
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US3030022A
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US3017616A
Cited
US3084337A
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US3159787A
Cited
US3223937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |