US2933695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear-logarithmic amplification
Assignee: Individual
•
Filing: 1956-06-08
•
Granted: 1960-04-19
•
Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Abraham E Ruvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; G; G06; G06G; G06G7/00; G06G7/12; G06G7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2485665A
Cited
US2662978A
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US2496551A
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US2480201A
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US2575073A
Cited
US2725191A
Cited
US2774825A
Cited
US2870409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |