FR23752E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Gas heater
Assignee: JEAN-AMEDEE HARDEL
•
Filing: 1920-11-06
•
Granted: 1921-12-30
•
Expires: 1940-11-06
Abstract
No abstract record available.
Inventors
- 👤 Jean-Amedee Hardel
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 16:23
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/62; F23D14/64
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.