DE827487C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Elastic connection of pipe sections, preferably duct connections for mining operations
Assignee: JOSEF V D SANDEN
•
Filing: 1950-08-12
•
Granted: 1952-01-10
•
Expires: 1970-08-12
Abstract
No abstract record available.
Inventors
- 👤 Josef V D Sanden
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-23 01:31
CPC Classifications
E; E21; E21F; E21F1/00; E21F1/04; E21F1/06
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.