USPTO serial 72115091
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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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DETROIT 34, MI
| Class | Description | Status | First use |
|---|---|---|---|
| 034 | AIR DELIVERY AND DISTRIBUTION UNITS, INCLUDING HOT AND COLD AIR MIXING UNITS AND REGULATORS THEREFOR | EXPIRED | Oct 18, 1958 |
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| Date | Code | Event | What it means |
|---|---|---|---|
| Aug 20, 1987 | EXRG | EXPIRED SEC. 9 | — |