US3564526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline leak detection device
Assignee: TOTAL CONTAINMENT Inc 75 E UWCHLAN AVENUE SUITE 102 EXTON PA 19341 A CORP OF DE
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Filing: 1967-11-16
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Granted: 1971-02-16
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Expires: 1987-11-16
Abstract
Abstract A DEVICE FOR USE IN DETECTING LEAKS IN A BURIED PIPELINE COMPRISING A PAIR OF CONDUCTORS POSITIONED BENEATH SAID PIPE AND SPACED APART BY AN INSULATION WHICH IS DEGRADABLE BY THE FLUID CONTAINED WITHIN SAID PIPE AND SUBSTAN- TIALLY IMPERVIOUS TO GROUND WATER OR OTHER LIQUIDS WHICH MAY CONTACT THE INSULATION DURING USE.
Inventors
- 👤 Ernest O Butts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/16; G01M3/165; G01M3/042; G01M3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |