Work holders – Work-underlying support – Movable roller
Patent
1988-01-22
1989-05-30
Schmidt, Frederick R.
Work holders
Work-underlying support
Movable roller
248118, 312209, 51273, B23Q 300
Patent
active
048343579
ABSTRACT:
A workplace for the treatment or finishing of, in particular, dental workpieces; for instance, impressions, dentures, plastic teeth, or respectively artificial teeth, and the like. Furthermore, the workpiece can also serve for the finishing of jewelry workpieces or the like by goldsmiths. An artificial background is used for the workplace in which there is clarified the coloration or, in essence, the color distinctions of the workpieces which are to be treated, through the avoidance of disturbing optical influences.
REFERENCES:
patent: 147594 (1874-02-01), Bird
patent: 1644441 (1927-10-01), O'Brien
patent: 2449492 (1948-09-01), Long
patent: 2827553 (1958-03-01), Riches
patent: 3010774 (1961-11-01), Doherty
patent: 3808750 (1974-05-01), Mann
patent: 4372659 (1983-02-01), Ogawa
Hartman Judy J.
Kaltenbach & Voigt GmbH & Co.
Schmidt Frederick R.
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