USPTO serial 72233303
DUO FLOW
Reviewed by CopyMark Law Group
Reg. 0830478Status 900
- Filing date
- Status date
- Registration date
- Jun 20, 1967
- Examiner
- —
- Law office
- —
What this means
This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.
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Owner
Goods and services
| Class | Description | Status | First use |
|---|---|---|---|
| 013 | THERMOSTATICALLY-OPERATED VALVES FOR CONTROLLING HOT AND COLD WATER FLOWS THROUGH ROOM HEAT EXCHANGE UNITS | EXPIRED | Sep 9, 1958 |
Related trademarks
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Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Sep 20, 1987 | EXRG | EXPIRED SEC. 9 | — |