US2613286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode follower amplifier
Assignee: Milliken Research Corp
•
Filing: 1947-06-20
•
Granted: 1952-10-07
•
Expires: 1967-06-20
Abstract
No abstract record available.
Inventors
- 👤 Donald G C Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:58
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/42; H03F3/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2423931A
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US2171614A
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US2269001A
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US2358428A
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US2428295A
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US2326614A
Cited
US2435579A
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US2443864A
Cited
US2516865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |