US3588460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast fourier transform processor
Assignee: AT&T Inc
•
Filing: 1968-07-01
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Granted: 1971-06-28
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Expires: 1988-07-01
Abstract
Abstract GROUPS FOR CONSECUTIVE SAMPLES FROM TWO SEPARATE CHANNELS ARE SIMULTANEOUSLY PROCESSED IN A CASCADE FAST FOURIER TRANSFORM PROCESSOR BY APPROPRIATELY CONNECTING SELECTED SWITCHES AND DELAYS TO THE COMPUTERS OF THE PROCESSOR.
Inventors
- 👤 Richard A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:35
CPC Classifications
G; G06; G06F; G06F17/00; G06F17/10; G06F17/14; G06F17/141; G06F17/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |