USPTO serial 72130203
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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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CAMBRIDGE 40, MA
| Class | Description | Status | First use |
|---|---|---|---|
| 006 | CHEMICAL COMPOSITION USEFUL AS A CONCRETE CURING COMPOUND | EXPIRED | Mar 27, 1957 |
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| Date | Code | Event | What it means |
|---|---|---|---|
| Aug 31, 1987 | EXRG | EXPIRED SEC. 9 | — |