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B A PROCTOR Co Inc

B A PROCTO
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2359489A Sound recording and reproducing Expired / Lapsed 1942-03-26 1944-10-03 0 Details
US2300239A Signal recording and communication system Expired / Lapsed 1940-10-03 1942-10-27 0 Details