US2844741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for transmitting and receiving ultrasonic shear wave motion
Assignee: Sperry Products Inc
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Filing: 1956-01-31
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Granted: 1958-07-22
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Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 Andrew M Murdoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:46
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/24; G01H; G01H1/00; G01H1/04; G01N2291/00; G01N2291/04; G01N2291/042; G01N2291/0421; G01N2291/0422
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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |