US3496527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer for determining the angle of incidence of sound waves
Assignee: Fried Krupp AG
•
Filing: 1968-11-21
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Granted: 1970-02-17
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Expires: 1988-11-21
Abstract
No abstract record available.
Inventors
- 👤 Gunter Hans Ziehm
- 👤 Karl-Friedrich Triebold
- 👤 Siegfried Franz Heinr Drischel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2724818A
Cited
US3043967A
Cited
US3142035A
Cited
US3290646A
Cited
US3136381A
Cited
US3264604A
Cited
US3325780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |