Patent US4069580A successfully refreshed from Google Patents.
Patent US3337799A successfully refreshed from Google Patents.
US3337799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic frequency analyzer using parallel one-third octave filters
Assignee: Individual
•
Filing: 1963-12-27
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Granted: 1967-08-22
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Expires: 1983-12-27
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:31
CPC Classifications
G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A SYSTEM FOR ANALYZING THE FREQUENCY OF AN INPUT SIGNAL COMPRISING; A 1/3 OCTAVE FILTER FOR PASSING A SIGNAL EQUAL TO ONE THIRD OF AN OCTAVE OF SAID INPUT SIGNAL; A SET OF NARROW BAND FILTERS CONNECTED TO SAID 1/3 OCTAVE FILTER FOR DIVIDING THE 1/3 OCTAVE SIGNAL INTO A PLURALITY OF DISCRETE NARROW BAND SIGNALS; A SET OF VOLTAGE COMPARATORS, EACH CONNECTED TO SAID 1/3 OCTAVE FILTER AND TO OUTPUT OF A SEPARATE ONE OF SAID SET OF NARROW BAND FILTERS FOR COMPARING THE MAGNITUDE OF SAID 1/3 OCTAVE SIGNAL TO THE MAGNITUDE OF A SEPARATE NARROW BAND SIGNAL AND PROVIDING AN OUTPUT SIGNAL WHEN THE SUM OF THE MAGNITUDES EQUALS A PREDETERMINED VALUE; A COMPUTER HAVING CIRCUITRY DEFINING A PLURALITY OF TIME DIVISION CHANNELS; AND A SWITCHING MATRIX CONNECTED TO SAID COMPUTER, AND TO EACH SAID NARROW BAND FILTER AND ITS INTERCONNECTED VOLTAGE COMPARATOR, SAID SWITCHING MATRIX BEING RESONSIVE TO VOLTAGE COMPARATOR OUTPUT SIGNALS TO SWITCH PARTICULAR ONES OF SAID NARROW BAND SIGNALS INTO SAID TIME DIVISION CHANNELS.
Claim 2
Independent Claim
170 words
A SYSTEM FOR ANALYZING THE FREQUENCY OF AN INPUT SIGNAL COMPRISING; A 1/3 OCTAVE FILTER FOR PASSING A SIGNAL EQUAL TO ONE THIRD OF AN OCTAVE OF SAID INPUT SIGNAL; A SET OF NARROW BAND FILTERS CONNECTED TO SAID 1/3 OCTAVE FILTER FOR DIVIDING THE 1/3 OCTAVE SIGNAL INTO A PLURALITY OF DISCRETE NARROW BAND SIGNALS; A SET OF VOLTAGE COMPARATORS, EACH CONNECTED TO SAID 1/3 OCTAVE FILTER AND TO OUTPUT OF A SEPARATE ONE OF SAID SET OF NARROW BAND FILTERS FOR COMPARING THE MAGNITUDE OF SAID 1/3 OCTAVE SIGNAL TO THE MAGNITUDE OF A SEPARATE NARROW BAND SIGNAL AND PROVIDING AN OUTPUT SIGNAL WHEN THE SUM OF THE MAGNITUDES EQUALS A PREDETERMINED VALUE; A COMPUTER HAVING CIRCUITRY DEFINING A PLURALITY OF TIME DIVISION CHANNELS; AND A SWITCHING MATRIX CONNECTED TO SAID COMPUTER, AND TO EACH SAID NARROW BAND FILTER AND ITS INTERCONNECTED VOLTAGE COMPARATOR, SAID SWITCHING MATRIX BEING RESONSIVE TO VOLTAGE COMPARATOR OUTPUT SIGNALS TO SWITCH PARTICULAR ONES OF SAID NARROW BAND SIGNALS INTO SAID TIME DIVISION CHANNELS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |