FR730442A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for the separation of gas mixtures
Assignee: Otto Potthoff
•
Filing: 1932-01-25
•
Granted: 1932-08-12
•
Expires: 1952-01-25
Abstract
No abstract record available.
Inventors
- 👤 Otto Potthoff
- 👤 Christian Michels
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/24
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.