US3525976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic amplitude-doppler detector
Assignee: Parke Davis and Co LLC
•
Filing: 1968-12-27
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Granted: 1970-08-25
•
Expires: 1988-12-27
Abstract
No abstract record available.
Inventors
- 👤 Martin H Wilcox
- 👤 Paul H Egli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:53
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/50; G01S15/52; G01S15/523; A; A61; A61B; A61B8/00; A61B8/48; A61B8/488; G01F; G01F1/00; G01F1/66; G01F1/663
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2961869A
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US3057188A
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US3222610A
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US3262062A
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US3359503A
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US3327286A
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US3405368A
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US3428908A
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US3383678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |