US2514482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonance inspection device
Assignee: Sperry Products Inc
•
Filing: 1948-04-17
•
Granted: 1950-07-11
•
Expires: 1968-04-17
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:23
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2303214A
Cited
US2431234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |