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INTERVAL INSTR Inc

INTERVAL I
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2559227A Shock wave generator Expired / Lapsed 1947-05-24 1951-07-03 0 Details
US2424633A Acoustic reservoir for use in a magnetic sound recording an… Expired / Lapsed 1944-05-19 1947-07-29 0 Details
US2424773A Locating device Expired / Lapsed 1944-02-26 1947-07-29 0 Details