FR391083A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device for supplying hot air to the hearths of steam boilers or others by means of propellers arranged in tubes
Assignee: Individual
•
Filing: 1908-06-10
•
Granted: 1908-10-22
•
Expires: 1928-06-10
Abstract
No abstract record available.
Inventors
- 👤 Edward Brunner
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 18:31
CPC Classifications
F; F23; F23M; F23M9/00; F23M9/02
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.