FR661832A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to gas production processes from heavy oils
Assignee: Constantin Chilowsky
•
Filing: 1928-01-25
•
Granted: 1929-07-30
•
Expires: 1948-01-25
Abstract
No abstract record available.
Inventors
- 👤 Constantin Chilowsky
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-06 20:04
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/38
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.