US2534565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for testing vibration translating devices by means of an oscilloscope pattern
Assignee: AT&T Inc
•
Filing: 1945-09-21
•
Granted: 1950-12-19
•
Expires: 1965-09-21
Abstract
No abstract record available.
Inventors
- 👤 Chester L Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/208
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |