Patent US859693A successfully refreshed from Google Patents.
Patent FR1109239A successfully refreshed from Google Patents.
FR1109239A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
New method of protecting the air heaters of steam generators against corrosion
Assignee: Cegelec SA
•
Filing: 1954-07-19
•
Granted: 1956-01-24
•
Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 08:17
CPC Classifications
F; F23; F23L; F23L15/00; F22; F22D; F22D1/00; F22D1/36; F23L15/04; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.