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US3460034A
Expired / Lapsed
US
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Comparator for determining both the magnitude and the sense of difference in the frequencies of two signals
Assignee: International Standard Electric Corp
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Filing: 1965-07-30
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Granted: 1969-08-05
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Leslie A Tanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:11
CPC Classifications
G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2855456A
Cited
US3092719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |