FR889908A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Tandem blowers with double rotor with attached tube blades
Assignee: Albert Bucher
•
Filing: 1942-09-15
•
Granted: 1944-01-24
•
Expires: 1962-09-15
Abstract
No abstract record available.
Inventors
- 👤 Albert Bucher
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 17:43
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/123
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.