Patent US5469284A successfully refreshed from Google Patents.
Patent US2878392A successfully refreshed from Google Patents.
US2878392A
Expired / Lapsed
US
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Method of detecting leaks and testing media therefor
Assignee: General Electric Co
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Filing: 1954-12-07
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Granted: 1959-03-17
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Expires: 1974-12-07
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Polito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:31
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
A CORROSION AND RUST INHIBITING NON-FLAMMABLE LEAK TESTING LIQUID COMPRISING AN AQUEOUS SOLUTION OF A HYDROXY ALKYL AMINE, A NON-IONIZING WETTING AGENT, AND A FLUORESCENT INDICATING SUBSTANCE.
References Cited (Backward Citations)
US1903287A
Cited
US1988584A
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US2205021A
Cited
US2346043A
Cited
US2434448A
Cited
US2635329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |