Patent US2936611A successfully refreshed from Google Patents.
US2936611A
Expired / Lapsed
US
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Leak testing system
Assignee: Individual
•
Filing: 1959-01-16
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Granted: 1960-05-17
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Expires: 1979-01-16
Abstract
No abstract record available.
Inventors
- 👤 Mat Lee E Le
- 👤 Robert T Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01M3/3263; G01L; G01L11/00; G01L11/004; G01L11/006; G01L7/00; G01L7/02; G01L7/04; G01L7/043; G01M3/3227; F; F16; F16L; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2472973A
Cited
US2807167A
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US2853874A
Cited
US2902149A
Cited
US2855777A
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US2872806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |