USPTO serial 72424565
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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 |
|---|---|---|---|
| 100 | ENGINEERING AND RESEARCH AND DEVELOPMENT SERVICES FOR THE PETROLEUM INDUSTRY, ANALYSIS OF CORE SAMPLES AND RESERVOIR FLUIDS, AND RESERVOIR ENGINEERING SERVICES | EXPIRED | Feb 1, 1972 |
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 |
|---|---|---|---|
| Aug 29, 1994 | EXRG | EXPIRED SEC. 9 | — |
| Jun 18, 1979 | C15A | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. | — |