Patent FR972746A successfully refreshed from Google Patents.
FR972746A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
gas purifier
Assignee: Roger-Louis-J Hollier-Larousse
•
Filing: 1941-04-08
•
Granted: 1951-02-02
•
Expires: 1961-04-08
Abstract
No abstract record available.
Inventors
- 👤 Roger-Louis-J Hollier-Larousse
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 22:24
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/021
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.