Patent US3516005A successfully refreshed from Google Patents.
US3516005A
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Amplifier for enhancing differential input signals
Assignee: Teledyne Geotech
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Filing: 1968-05-06
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Granted: 1970-06-02
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Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Robert F Brown Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:39
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45479; H03F3/45928; H03F3/4595; H03F3/45955; H03F3/45959; H03F3/45076; H03F3/45475; H03F2203/00; H03F2203/45; H03F2203/45522; H03F2203/45528; H03F2203/45594
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |