US2630472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for inspecting cavities
Assignee: General Electric Co
•
Filing: 1948-07-01
•
Granted: 1953-03-03
•
Expires: 1968-07-01
Abstract
No abstract record available.
Inventors
- 👤 Elmer D Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
G; G01; G01N; G01N22/00; G01N22/02; G01S; G01S7/00; G01S7/02; G01S7/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2365207A
Cited
US2156012A
Cited
US2421933A
Cited
US2455942A
Cited
US2457673A
Cited
US2491418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |