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Frontier Telephone of Rochester Inc

Frontier T
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2392890A Telephone traffic indicating and recording means Expired / Lapsed 1944-02-03 1946-01-15 0 Details
US2108909A Telephone system Expired / Lapsed 1936-05-28 1938-02-22 0 Details