USPTO serial 72276387
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This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.
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| Class | Description | Status | First use |
|---|---|---|---|
| 021 | ELECTRICAL APPARATUS AND SUPPLIES-NAMELY, ATTENUATORS; SWEEP GENERATORS; FIXED AND TUNABLE FREQUENCY MULTIPLIERS; RADIO FREQUENCY SWITCHES; VOLTAGE REGULATION POWER SUPPLIES; BANDPASS FILTERS; LOWPASS FILTERS; TUNABLE FILTERS; FREQUENCY DIPLEXERS; FREQUENCY MULTIPLEXERS; IMPEDANCE TRANSFORMERS; VIDEO AND RADIO FREQUENCY AMPLIFIERS; FIXED AND TUNABLE OSCILLATORS; AND POWER DIVIDERS | EXPIRED | Jun 16, 1953 |
| 026 | SPECTRUM ANALYSIS EQUIPMENT; ATTENUATORS FOR TEST EQUIPMENT; RADIO FREQUENCY DETECTORS; TERMINATIONS AND MISMATCH TERMINATIONS FOR THE MEASUREMENT OF VOLTAGE REFLECTION COEFFICIENT AND VSWR IN COAXIAL SYSTEMS; CAVITY WAVEMETERS; FREQUENCY MARKER GENERATORS FOR MEASUREMENT OF FREQUENCY; PHOTECTOR IMPEDANCE BRIDGES FOR MEASUREMENT OF VOLTAGE REFLECTION COEFFICIENT; SWEEP GENERATORS FOR MEASURING FREQUENCY RESPONSE; MARKER OSCILLATORS FOR MEASUREMENT OF FREQUENCY; COLOR BAR GENERATORS FOR MEASUREMENT OF COLOR PURITY AND CONVERGENCE; WHITE DOT GENERATORS FOR MEASUREMENT OF COLOR PURITY, CONVERGENCE AND LINEARITY; AND OSCILLOSCOPES | EXPIRED | Jun 16, 1953 |
CopyMark links this record to cited §2(d) serials, the owner's other marks, Nice classes, similar mark names, and recently changed USPTO applications.
| Date | Code | Event | What it means |
|---|---|---|---|
| Nov 3, 1992 | EXRG | EXPIRED SEC. 9 | — |