USPTO serial 71548535
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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 |
|---|---|---|---|
| 002 | DEWATERING TANKS, SAID TANKS BEING EMPLOYED FOR SEPARATING SOLID MATERIAL IN SLUDGE, AND THE LIKE, FROM WATER, A TYPICAL SEPARATOR CONSISTING OF A TANK FOR RECEIVING SLUDGE FROM A DUST COLLECTOR OR OTHER SLUDGE-FORMING APPARATUS AND BEING PROVIDED WITH A SERIES OF LOUVERS DIRECTED DOWNWARDLY TO PERMIT THE FLOW OF WATER UPWARDLY INTO THE INTERIOR OF A LOUVER-EQUIPPED PASSAGE, SO THAT WATER MAY ESCAPE WHILE THE SLUDGE IS RETAINED IN THE SEPARATOR TANK | EXPIRED | — |
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 |
|---|---|---|---|
| Jun 28, 1993 | EXRG | EXPIRED SEC. 9 | — |
| Sep 23, 1972 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |