USPTO serial 71621823
Reviewed by CopyMark Law Group
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 |
|---|---|---|---|
| 021 | TIME DELAY RELAY MECHANISMS USED IN ELECTRICAL AND ELECTRONIC CIRCUITS FOR OPENING AND/OR CLOSING ONE OR MORE CIRCUITS A PREDETERMINED TIMED INTERVAL AFTER THE CESSATION OR INITIATION OF A PREDETERMINED CURRENT FLOW | EXPIRED | Oct 16, 1951 |
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 |
|---|---|---|---|
| Sep 13, 1993 | EXRG | EXPIRED SEC. 9 | — |
| Dec 9, 1972 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |