USPTO serial 72247894
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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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HENDON, LONDON NW. 4, GB
| Class | Description | Status | First use |
|---|---|---|---|
| 006 | CHEMICAL COMPOUNDS FOR USE IN BOILERS AND SMOKE CHANNELS FOR PREVENTING THE FORMATION OF SOOT, FOR LOOSENING SOOT DEPOSITS, AND FOR INCREASING COMBUSTION | EXPIRED | — |
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 |
|---|---|---|---|
| Jan 23, 1989 | EXRG | EXPIRED SEC. 9 | — |