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Vereinigte Stahlwerke AG

Vereinigte

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
DE591149C	Method and device for painting pipes with protective coatin…	Expired / Lapsed	1932-02-16	1934-01-17	0	Details
US1886275A	Method of joining pipe ends	Expired / Lapsed	1930-03-31	1932-11-01	0	Details
US1847837A	Method of connecting pipes	Expired / Lapsed	1930-10-10	1932-03-01	0	Details
US1835667A	Process of hardening copper containing steels for structura…	Expired / Lapsed	1929-04-05	1931-12-08	0	Details