US2875355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic zone plate focusing transducer
Assignee: Gulton Industries Inc
•
Filing: 1954-05-24
•
Granted: 1959-02-24
•
Expires: 1974-05-24
Abstract
No abstract record available.
Inventors
- 👤 Lucien A Petermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:33
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2063947A
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US2262966A
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US2427062A
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US2451967A
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US2490452A
Cited
US2458288A
Cited
US2540412A
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US2685041A
Cited
US2716708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |