USPTO serial 72012573
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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 |
|---|---|---|---|
| 034 | AIR CONDITIONING APPARATUS-NAMELY, A ROTARY HEAT EXCHANGER MOUNTED TO MOVE CYCLICALLY ACROSS THE RESPECTIVE PASSAGES FOR INCOMING AND OUTGOING AIR OF A ROOM OR OTHER ENCLOSURE TO EXCHANGE THE THERMODYNAMIC CHARACTERISTICS OF AIR THEREIN | EXPIRED | Jun 15, 1956 |
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 |
|---|---|---|---|
| May 18, 1998 | EXRG | EXPIRED SEC. 9 | — |
| Aug 13, 1977 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |