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| Number | Title | Issue Date |
| 6775862 | Whirlpool bathtub with releasable bottom element A whirlpool bathtub and a valve device for such a tub. The tub has a molded tub part and at least one, preferably two removable, circular bottom elements which match recesses in the tub part. The bottom elements can be attached to the tub part by means of central sc... | 08/17/2004 |