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European patent · EP0651852 · Deleted
Register entry
- Publication number
- EP0651852
- Application number
- EP93918540
- Kind
- European patent with effect for Switzerland and Liechtenstein
- Status
- Deleted
- Specification
- Granted
- Filed
- Jul 30, 1993
- Published
- May 10, 1995
- Granted
- Sep 22, 1999
- Deleted
- Sep 22, 1999
- Reason
- No effect for Switzerland and Liechtenstein
- IPC classes
- E21B 43/04 (2006.01)E21B 43/08 (2006.01)E21B 43/10 (2006.01)
- Priority
- US 922717 31.07.1992
- PCT application
- PCT/US1993/007208 30.07.1993
- PCT publication
- WO1994/003703 17.02.1994
- Filing language
- English
- Source
- Swissreg
History
What the Federal Institute of Intellectual Property published about this title, newest first.
- Mar 31, 2000
Change
Published in PIDTJ No 6 in 2000
- Sep 30, 1999
Granted
Published in PIDTJ No 18 in 1999
Parties
Holder
Inventor
CORNETTE, Holley, M.
Houston, TX 77079, US
BETHEL, Robert, K.
Houston, TX 77067, US
PETERSEN, Elmer, Richard
Woodlands, TX 77381, 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.