DE679023C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Arrangement of a device for ballast water extraction
Assignee: E H LUDWIG DUERR DR ING
•
Filing: 1937-12-31
•
Granted: 1939-07-29
•
Expires: 1957-12-31
Abstract
No abstract record available.
Inventors
- 👤 Dr-Ing E H Ludwig Duerr
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 13:19
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/58; B64B1/64
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.