USPTO serial 71563408
Reviewed by CopyMark Law Group
This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.
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MICHIGAN CITY, IN
| Class | Description | Status | First use |
|---|---|---|---|
| 026 | GAS ANALYZER IN WHICH THE MAGNETIC PROPERTIES OF OXYGEN ARE MEASURED FOR DETERMINING THE PERCENTAGE OF OXYGEN PRESENT IN A SAMPLE | EXPIRED | Dec 1, 1946 |
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 | — |
| Oct 2, 1971 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |