US3538439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring the amplitude of any point on repetitive cycles of a high frequency waveform
Assignee: Texas Instruments Inc
•
Filing: 1965-12-07
•
Granted: 1970-11-03
•
Expires: 1985-12-07
Abstract
No abstract record available.
Inventors
- 👤 William E Bray
- 👤 Leslie L Jasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:02
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/317; G01R31/3181; G01R31/319; G01R31/3193; G01R31/31937; G01R31/2851
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2836356A
Cited
US2791746A
Cited
US3122732A
Cited
US2951181A
Cited
GB989740A
Cited
US3303493A
Cited
US3312894A
Cited
US3317832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |