USPTO serial 71548533
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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 |
|---|---|---|---|
| 023 | PARTICLE SEPARATORS AND SETTLER EQUIPMENT FOR SETTING HEAVY PARTICLES CARRIED BY A FLUID STREAM, A TYPICAL SEPARATOR CONSISTING OF A CONDUIT HAVING A PORTION IN THE SHAPE OF AN ELBOW, THE HEEL OF THE ELBOW BEING CUT AWAY, AND A TRAP COMPARTMENT COMMUNICATING WITH THE OPENING IN THE HEEL OF SAID CONDUIT FOR RETAINING THE SOLID MATERIALS THROWN OUT OF AN AIR OR GASEOUS STREAM CONTAINING PARTICULATE MATTER AND DRAWN THROUGH THE CONDUIT UNDER SUFFICIENT VELOCITY TO THROW OUT SUCH PARTICULATE MATTER INTO THE COMPARTMENT | EXPIRED | Jun 18, 1945 |
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 | — |
| Aug 7, 1971 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |