Patent FR846573A successfully refreshed from Google Patents.
FR846573A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
heat exchanger
Assignee: BBC BROWN BOVERI and CIE
•
Filing: 1938-11-24
•
Granted: 1939-09-20
•
Expires: 1958-11-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 11:46
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/10; F28D7/12
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.