US2650344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic testing apparatus
Assignee: Tuboscope Co
•
Filing: 1949-03-22
•
Granted: 1953-08-25
•
Expires: 1969-03-22
Abstract
No abstract record available.
Inventors
- 👤 Lloyd Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9093
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US213197A
Cited
US890085A
Cited
US2067804A
Cited
US1782462A
Cited
US2185589A
Cited
US2124579A
Cited
US2218784A
Cited
US2217733A
Cited
US2220881A
Cited
US2359894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |