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ECHOMETER GmbH

ECHOMETER
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2032893A Arrangement for the direct indication of time periods, espe… Expired / Lapsed 1931-05-02 1936-03-03 0 Details
US1789158A Lead for sounding purposes Expired / Lapsed 1928-05-23 1931-01-13 0 Details