USPTO serial 71504051
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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 |
|---|---|---|---|
| 031 | REFINING PACKS WHICH ARE IN THE FORM OF REPLACEABLE ELEMENTS COMPRISING FILTERING MATERIALS AND ARE ADAPTED TO BE PLACED IN FILTER HOUSINGS THROUGH WHICH LIQUIDS TO BE FILTERED ARE PASSED | EXPIRED | Apr 27, 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 |
|---|---|---|---|
| Apr 8, 1987 | EXRG | EXPIRED SEC. 9 | — |