USPTO serial 72270563
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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 |
|---|---|---|---|
| 023 | FLUID ENERGY DRYING APPARATUS, USED FOR DRYING GRANULAR PARTICLES WHILE SIMULTANEOUSLY GRINDING THEM, BY SUBJECTING THE PARTICLES TO PULVERIZATION IN A CIRCULATING VORTEX OF HIGH VELOCITY, HEATED GASES OR VAPORS | EXPIRED | Jul 3, 1963 |
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 | — |