US3315171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digitalized transversal filter
Assignee: AT&T Inc
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Filing: 1963-12-24
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Granted: 1967-04-18
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Expires: 1983-12-24
Abstract
No abstract record available.
Inventors
- 👤 Floyd K Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:51
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/03; H04L25/03006; H04L25/03012; H04L25/03114; H04L25/03133
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A SYSTEM FOR EQUALIZING A TIME VARYING SIGNAL SUBJECTED TO THE PHASE DISTORING EFFECTS OF TRAVERSING A REAL TRANSMISSION MEDIUM COMPRISING: MEANS FOR MULTIPLYING SAID DISTORTED SIGNAL BY A PLURALITY OF PREDETERMINED CORRECTING FACTORS TO PROVIDE A PLURALITY OF TIME VARYING PRODUCT SIGNALS; A FIRST ACCUMULATOR FOR PROVIDING A FIRST SIGNAL PROPORTIONAL TO THE SUM OF SIGNALS APPLIED THERETO;
References Cited (Backward Citations)
US2908874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |