| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI
SK TR |
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Designated Extension States: |
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AL BA HR LV MK YU |
| (71) |
Applicant: International Business Machines Corporation |
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Armonk, N.Y. 10504 (US) |
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| (72) |
Inventors: |
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- Backes, Michael
CH-8800 Thalwil (CH)
- Karjoth, Guenter
CH-8820 Waedenswil (CH)
- Pfitzmann, Birgit M.
CH-8833 Samstagern (CH)
- Schunter, Matthias
CH-8003 Zurich (CH)
- Waidner, Michael P.
CH-8804 Au (CH)
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| (74) |
Representative: Toleti, Martin |
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IBM Research GmbH
Zurich Research Laboratory
Säumerstrasse 4 / Postfach 8803 Rüschlikon 8803 Rüschlikon (CH) |
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