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Bergwerksverband GmbH

Bergwerksv

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
DE2517342A1	MEASURING PROBE	Expired / Lapsed	1975-04-19	—	0	Details
US4534597A	Mining tool with automatic sprinkler control	Expired / Lapsed	1983-09-22	1985-08-13	5	Details
US4264339A	Process for the recovery of nitrogen-rich gases from gases …	Expired / Lapsed	1979-03-15	1981-04-28	11	Details
US3947832A	System for protecting persons underground from dangerous ar…	Expired / Lapsed	1971-05-20	1976-03-30	18	Details
US3885423A	Method of measuring changes in the area surrounding a minin…	Expired / Lapsed	1974-02-20	1975-05-27	4	Details