USPTO serial 71661268
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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 |
|---|---|---|---|
| 103 | WELL TREATING SERVICE-NAMELY, PLACING A LOW PENETRATING FLUID OPPOSITE A ZONE IN A WELL TO BE PERFORATED TO PREVENT UNDESIRABLE FLUIDS FROM ENTERING THE PERFORATION | EXPIRED | Jan 6, 1954 |
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 |
|---|---|---|---|
| Oct 30, 1995 | EXRG | EXPIRED SEC. 9 | — |
| Jan 25, 1975 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |