| (84) |
Designated Contracting States: |
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DE FR GB IT SE |
| (30) |
Priority: |
17.04.1998 JP 10809598
|
| (43) |
Date of publication of application: |
|
05.04.2000 Bulletin 2000/14 |
| (73) |
Proprietor: HITACHI CONSTRUCTION MACHINERY CO., LTD. |
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Bunkyo-ku
Tokyo 112-0004 (JP) |
|
| (72) |
Inventors: |
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- OGURA, Hiroshi
Ryugasaki-shi,
Ibaraki 301-0003 (JP)
- WATANABE, Hiroshi
Ushiku-shi,
Ibaraki 300-1236 (JP)
|
| (74) |
Representative: Prins, Adrianus Willem et al |
|
Vereenigde,
P.O.Box 87930 2508 DH Den Haag 2508 DH Den Haag (NL) |
| (56) |
References cited: :
EP-A- 0 811 728 JP-A- 9 221 792
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DE-U- 29 715 552
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256422 A (HITACHI CONSTR MACH CO LTD), 30 September 1997 (1997-09-30)
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151491 A (TOKAI RIKA CO LTD), 10 June 1997 (1997-06-10)
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