USPTO serial 71484961
ROTO-LOUVER
Reviewed by CopyMark Law Group
Reg. 0420713Status 900
- Filing date
- Status date
- Registration date
- Apr 30, 1946
- Examiner
- —
- Law office
- FILE DESTROYED
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 |
|---|---|---|---|
| 023 | ROTARY HORIZONTAL DRUM TYPE DRYERS AND COOLERS THROUGH WHICH FLOWABLE SOLIDS AND TREATMENT GASES ARE PASSED IN HEAT EXCHANGE RELATION | EXPIRED | Apr 12, 1937 |
Related trademarks
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Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Dec 11, 1986 | EXRG | EXPIRED SEC. 9 | — |