US3394586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay line for ultrasonic testing instrument
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-08-14
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Granted: 1968-07-30
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Expires: 1984-08-14
Abstract
No abstract record available.
Inventors
- 👤 Newbold O Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/28; G10; G10K; G10K11/00; G10K11/18; G10K11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |