Patent US3358129A successfully refreshed from Google Patents.
US3358129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic trigonometric multiplier
Assignee: Raytheon Co
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Filing: 1964-05-28
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Granted: 1967-12-12
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/161; G06G7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A SYSTEM COMPRISING IN COMBINATION, MEANS FOR PROVIDING A PULSE WIDTH MODULATED INTERMEDIATE SIGNAL WHOSE WIDTH IS RELATED TO A FIRST SIGNAL, MEANS FOR PULSE AMPLITUDE MODULATING SAID INTERMEDIATE SIGNAL IN ACCORDANCE WITH A SECOND SIGNAL, MEANS TUNED TO A FUNDAMENTAL FREQUENCY HARMONIC FOR BAND-PASS FILTERING SAID PULSE WIDTH AND AMPLITUDE MODULATED INTERMEDIATE SIGNAL TO PROVIDE AN OUTPUT SIGNAL REPRESENTATIVE OF THE PRODUCT OF SAID SECOND SIGNAL AND TRIGONOMETRIC FUNCTION OF SAID FIRST SIGNAL AND MEANS FOR DETECTING THE PEAK AMPLITUDE OF SAID OUTPUT SIGNAL TO GENERATE THE PRODUCT OF SAID SECOND SIGNAL AND A TRIGONOMETRIC FUNCTION OF SAID FIRST SIGNAL.
Claim 2
Independent Claim
101 words
A SYSTEM COMPRISING IN COMBINATION, MEANS FOR PROVIDING A PULSE WIDTH MODULATED INTERMEDIATE SIGNAL WHOSE WIDTH IS RELATED TO A FIRST SIGNAL, MEANS FOR PULSE AMPLITUDE MODULATING SAID INTERMEDIATE SIGNAL IN ACCORDANCE WITH A SECOND SIGNAL, MEANS TUNED TO A FUNDAMENTAL FREQUENCY HARMONIC FOR BAND-PASS FILTERING SAID PULSE WIDTH AND AMPLITUDE MODULATED INTERMEDIATE SIGNAL TO PROVIDE AN OUTPUT SIGNAL REPRESENTATIVE OF THE PRODUCT OF SAID SECOND SIGNAL AND TRIGONOMETRIC FUNCTION OF SAID FIRST SIGNAL AND MEANS FOR DETECTING THE PEAK AMPLITUDE OF SAID OUTPUT SIGNAL TO GENERATE THE PRODUCT OF SAID SECOND SIGNAL AND A TRIGONOMETRIC FUNCTION OF SAID FIRST SIGNAL.
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |