Elektret-Anordnung
European patent · EP0556792 · Deleted
Register entry
- Publication number
- EP0556792
- Application number
- EP93102459
- Kind
- European patent with effect for Switzerland and Liechtenstein
- Status
- Deleted
- Specification
- Granted
- Filed
- Feb 17, 1993
- Published
- Aug 25, 1993
- Granted
- Aug 23, 1995
- Deleted
- Feb 28, 1999
- Reason
- Annual fee unpaid
- IPC classes
- H04R 19/01 (2006.01)
- Priority
- US A 836606 18.02.1992
- Filing language
- English
- Source
- Swissreg
History
What the Federal Institute of Intellectual Property published about this title, newest first.
- Oct 15, 1999
Deleted, fee unpaid
Published in PIDTJ No 19 in 1999
- Sep 29, 1995
Granted
Published in PIDTJ No 18 in 1995
Parties
Inventor
Ballad, William James
Buffalo Grove, Illinois 60089, US
Carlson, Elmer V.
Prospect Heights, Illinois, US
The register names each party by name and address. A holder or agent is linked to an organization where exactly one entity of the commercial register bears its name; the street of a party not so recognised is not shown here.