US3794574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cathodically protecting metal conduit system
Assignee: United States Department of the Interior
•
Filing: 1972-04-27
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Granted: 1974-02-26
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Expires: 1992-04-27
Abstract
Abstract A metal conduit system particularly adapted to flow an electrolyte therethrough is provided with a sacrificial anode having an inside tubular surface adapted to receive the electrolyte against substantially its entire area and such anode serves as a containment member for the electrolyte.
Inventors
- 👤 D Fauth
- 👤 R Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:41
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/02; F16L25/026; C; C23; C23F; C23F13/00; C23F13/02; Y; Y10; Y10S; Y10S138/00; Y10S138/06
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |