FR994912A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Double-acting electric heater that can be used either after storage or immediately in direct connection
Assignee: Joseph-Louis Routin
•
Filing: 1945-02-20
•
Granted: 1951-11-23
•
Expires: 1965-02-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph-Louis Routin
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 17:08
CPC Classifications
F; F24; F24H; F24H7/00; F24H7/02; F24H7/0208
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.