US2930972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting discontinuities in ferrous materials
Assignee: Individual
•
Filing: 1956-12-03
•
Granted: 1960-03-29
•
Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Taylor William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:36
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/83; G01N27/84
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1687081A
Cited
US1553543A
Cited
US2334827A
Cited
US2436918A
Cited
US2430167A
Cited
US2432786A
Cited
US2644921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |