Dental treatment apparatus

Pipe joints or couplings – Essential catch

Reexamination Certificate

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Details

C285S124100, C433S126000

Reexamination Certificate

active

07726699

ABSTRACT:
Apparatus for dental treatment includes a base, a treatment unit, and a connecting piece. The treatment unit has one or more treatment instruments and one or more lines for the supply of water, air and electricity. The connecting piece is placed in between the base and the treatment unit. The treatment unit can be disconnected from and connected to the base by using the connecting piece.

REFERENCES:
patent: 2260373 (1941-10-01), Gibbs
patent: 2935338 (1960-05-01), Mills, Jr .
patent: 3082394 (1963-03-01), Hahn et al.
patent: 4026581 (1977-05-01), Pasbrig
patent: 4139222 (1979-02-01), Loland
patent: 4403959 (1983-09-01), Hatakeyama
patent: 5039304 (1991-08-01), Heil
patent: 5316347 (1994-05-01), Arosio
patent: 5476379 (1995-12-01), Disel
patent: 5806832 (1998-09-01), Larbuisson
patent: 6783379 (2004-08-01), Kerscher et al.

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