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ELECTRONIC CONTROLS CORP

ELECTRONIC
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3274463A Symmetrically switching integrated semiconductor devices Expired / Lapsed 1964-02-11 1966-09-20 2 Details
US2309329A Photoelectric apparatus Expired / Lapsed 1941-08-20 1943-01-26 0 Details
US2171433A Smoothness gauge Expired / Lapsed 1937-02-09 1939-08-29 0 Details