Patent US3504528A successfully refreshed from Google Patents.
US3504528A
Expired / Lapsed
US
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Fluid pressure leak detector system for closed containers and the like
Assignee: United States Department of the Army
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Filing: 1968-04-09
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Granted: 1970-04-07
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Expires: 1988-04-09
Abstract
No abstract record available.
Inventors
- 👤 Mark H Weinberg
- 👤 Robert Mesuk
- 👤 Edwin A Trier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:54
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01M3/3263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA665391A
Cited
US2116636A
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US2872806A
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US2924965A
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US3039295A
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US3331237A
Cited
US3326034A
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US3355932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |