US2929025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor signal-translating system
Assignee: Hazeltine Research Inc
•
Filing: 1957-01-22
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Granted: 1960-03-15
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Carl R Wilhelmsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:49
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23563E
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US2662124A
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US2659773A
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US2663806A
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US2784262A
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US2745038A
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US2839620A
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US2831968A
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US2826647A
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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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |