US2972068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uni-directional ultrasonic transducer
Assignee: AUTOMATION INSTR Inc
•
Filing: 1956-07-06
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Granted: 1961-02-14
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Douglass H Howry
- 👤 Gerald J Posakony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:51
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/002; G10K11/16; G10K11/162; G10K11/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265226A
Cited
US2430013A
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US2435227A
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US2390160A
Cited
US2392429A
Cited
US2707755A
Cited
US2700738A
Cited
US2872600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |