US3024657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for determining defects in furnace walls
Assignee: Individual
•
Filing: 1958-04-23
•
Granted: 1962-03-13
•
Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 Van T Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:07
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; F; F27; F27D; F27D21/00; F27D21/0021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2698872A
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US2699059A
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US2839594A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |