US3012433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler and condenser tube tester
Assignee: Individual
•
Filing: 1956-12-21
•
Granted: 1961-12-12
•
Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 Blafield Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:47
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323030A
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GB190008571A
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US988917A
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US1414075A
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US1861542A
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US1933322A
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US1971065A
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US2760367A
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US2748598A
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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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |