USPTO serial 72131403
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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 |
|---|---|---|---|
| 044 | PORTABLE BREATHING APPARATUS COMPRISING A TANK OF COMPRESSED AIR WHICH NORMALLY SUPPLIES THE REQUIRED BREATHING AIR; A PRESSURE REGULATOR; A DEMAND VALVE; AND A MEANS FOR SHORT CIRCUITING SAID REGULATOR AND FOR TUBULARLY CONNECTING THE APPARATUS TO A SOURCE OF LOW PRESSURE AIR WHENEVER THE LATTER IS AVAILABLE | EXPIRED | Sep 22, 1961 |
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 |
|---|---|---|---|
| Jan 12, 1988 | EXRG | EXPIRED SEC. 9 | — |