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INTER OUTER TELEPHONE CORP

INTER OUTE
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2082130A Interior telephone equipment Expired / Lapsed 1935-08-24 1937-06-01 0 Details
US2071053A Inter-outer telephone system Expired / Lapsed 1934-07-05 1937-02-16 0 Details