USPTO serial 72309746
BRIGEHEAL
Reviewed by CopyMark Law Group
Reg. 0888516Status 900
- Filing date
- Status date
- Registration date
- Mar 31, 1970
- 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 |
|---|---|---|---|
| 006 | WELLBORE FLUID ADDITIVES AS BLENDS OF LIGNOSULFONATES, CARBOHYDRATES AND CARBONATES USED TO PREVENT LOST CIRCULATION AND CONTROL THE FLUID LOSS PROPERTIES OF FRESH WATER, SEA WATER, PRODUCED BRINES, SATURATED SALT BRINES AND CALCIUM CHLORIDE BRINES USED IN THE WORKOVER, DRILLING, DEEPENING AND FRACTURING OF OIL, GAS AND WATER WELLS | EXPIRED | Mar 31, 1967 |
Related trademarks
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Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Nov 4, 1992 | EXRG | EXPIRED SEC. 9 | — |