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Boelkow Entwicklungen KG

Boelkow En
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3038110A Control circuit for indicating the voltage drop of a batter… Expired / Lapsed 1960-10-28 1962-06-05 0 Details
US2916832A Helicopter trainer mounted on float Expired / Lapsed 1956-11-05 1959-12-15 0 Details