US2705422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic inspection device
Assignee: Sperry Products Inc
•
Filing: 1951-03-30
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Granted: 1955-04-05
•
Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Elliott A Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:22
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/26; Y; Y10; Y10S; Y10S451/00; Y10S451/91
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) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |