Trademark Overview
On Thursday, February 23, 1978, a trademark application was filed for OEI with the United States Patent and Trademark Office. The USPTO has given the OEI trademark a serial number of 73159731. The federal status of this trademark filing is CANCELLED - SECTION 8 as of Tuesday, January 28, 1986. This trademark is owned by OPTICA ELECTRONICS, INC.. The OEI trademark is filed in the Computer & Software Products & Electrical & Scientific Products category with the following description:
ELECTRICAL EQUIPMENT AND SOLID STATE ELECTRONIC DEVICES-NAMELY, OPERATIONAL AMPLIFIERS; VOLTAGE FOLLOWER, CURRENT BOOSTER; PREAMPLIFIERS; BIPOLAR LOGARITHMIC AMPLIFIERS; PHASE DETECTORS; PERIOD-TO-VOLTAGE CONVERTERS; PEAK-TO-PEAK DETECTORS; SAMPLE AND HOLD ANALOG MEMORIES; POSITIVE PEAK SENSE AND HOLD ANALOG MEMORIES; COORDINATE CONVERTERS; DIGITAL-TO-ANALOG CONVERTERS; MICROCOMPUTERS; POWER SUPPLIES; ABSOLUTE VALUE MODULES; ANALOG COMPARATORS; CHARGE AMPLIFIER-SAMPLE AND HOLD MODULES; AND THREE DIMENSIONAL DISPLAY SYSTEM MODULES