USPTO serial 72105398
ELECTRO FLUID
Reviewed by CopyMark Law Group
Reg. 0738515Status 900
- Filing date
- Status date
- Registration date
- Oct 2, 1962
- 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 |
|---|---|---|---|
| 021 | LIQUIDS WHOSE VISCOSITY INCREASES WHEN EXPOSED TO AN ELECTRIC FIELD AND ADAPTED TO FORM A FORCE COUPLE IN DEVICES SUCH AS ELECTROSTATIC NONMAGNETIC CHUCKS, SOUND TRANSDUCERS, HIGH-SPEED RELAYS, SHOCK ABSORBERS, FLOW CONTROL VALVES, HIGH-SPEED ELECTRIC CLUTCHES AND BRAKES | EXPIRED | Oct 31, 1958 |
Related trademarks
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Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Jan 28, 1988 | EXRG | EXPIRED SEC. 9 | — |