Patent CA652727A successfully refreshed from Google Patents.
CA652727A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Secondary recovery of oil
Assignee: Cassella Farbwerke Mainkur AG
•
Filing: —
•
Granted: 1962-11-20
•
Expires: 1979-11-20
Abstract
No abstract record available.
Inventors
- 👤 Kiesewetter Alfred
- 👤 Kunze Wilhelm
- 👤 Wagner Curt
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-05 18:52
CPC Classifications
—
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.