Patent US2995652A successfully refreshed from Google Patents.
US2995652A
Expired / Lapsed
US
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Single transistor reflex circuit
Assignee: IND DEV ENGINEERING ASSOCIATES
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Filing: 1957-09-13
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Granted: 1961-08-08
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Expires: 1977-09-13
Abstract
No abstract record available.
Inventors
- 👤 James F Towler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:31
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/46; H03G; H03G3/00; H03G3/20; H03G3/30; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/22; H04B1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1735185A
Cited
US1824331A
Cited
GB331191A
Cited
AT145002B
Cited
US2863065A
Cited
US2777056A
Cited
US2916616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |