Bolidens Gruvaktiebolag

Bolidens G

Active Patents

Total Holdings

Patent Holdings

Patent No.	Title	Status	Filing Date	Grant Date	Actions
US2527559A	Method of geophysical exploration	Expired / Lapsed	1950-05-02	1950-10-31	Details
US2375355A	Selenium rectifier	Expired / Lapsed	1943-12-04	1945-05-08	Details
US2179892A	Apparatus for determining gravity	Expired / Lapsed	1937-11-24	1939-11-14	Details