USPTO serial 71462383
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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 | METAL HARDENING ELECTRIC FURNACES AND AMMONIA DISSOCIATORS FOR CONTROLLING THE CHEMICAL COMPOSITION OF THE ATMOSPHERE IN THE HEAT TREATING CHAMBERS IN SUCH FURNACES | EXPIRED | May 5, 1943 |
CopyMark links this record to cited ยง2(d) serials, the owner's other marks, Nice classes, similar mark names, and recently changed USPTO applications.
| Date | Code | Event | What it means |
|---|---|---|---|
| Dec 16, 1988 | EXRG | EXPIRED SEC. 9 | โ |
| Aug 19, 1967 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | โ |