Patent DE880677C successfully refreshed from Google Patents.
DE880677C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for sealing cement and spun concrete pipes and sealing material for carrying out the process
Assignee: CHEM BAUTECHNISCHE PRODUKTE AG
•
Filing: 1949-11-25
•
Granted: 1953-06-22
•
Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Bruno Feuersenger
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-01 09:17
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; F16L13/113; F16L25/00; F16L25/0027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.