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Marconi Sounding Device Co Ltd

Marconi So
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
GB1318081A Echo meters Expired / Lapsed 1970-02-20 — 0 Details
US2530035A Echo sounder and other device for distance measuring in wat… Expired / Lapsed 1948-01-13 1950-11-14 0 Details