US2871349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discriminator circuit
Assignee: Individual
•
Filing: 1954-07-14
•
Granted: 1959-01-27
•
Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Jonas M Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:29
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2605425A
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US2561088A
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US2589387A
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US2662181A
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US2623177A
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US2543256A
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US2496063A
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US2539818A
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US2595608A
Cited
US2617985A
Cited
US2682606A
Cited
US2774038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |