Patent US3194724A successfully refreshed from Google Patents.
DE959778C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the production of a protective surface layer on metals
Assignee: ARNO STAERKER DR
•
Filing: 1951-08-12
•
Granted: 1957-03-14
•
Expires: 1971-08-12
Abstract
No abstract record available.
Inventors
- 👤 Dr Arno Staerker
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
C; C23; C23C; C23C24/00; C23D; C23D5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CH246741A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.