US3473139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for making simultaneous,equal changes in the amplification of a plurality of electrical signals
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1968-05-06
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Granted: 1969-10-14
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Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Ernst Legler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0017; H03G1/0023; H04; H04N; H04N9/00; H04N9/64; H04N9/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2492542A
Cited
US3210683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |