Crystallization furnace for dental prostheses

- Olympus
Description

FIG. 1 is a front elevational view of a crystallization furnace for dental prostheses showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a front isometric view thereof.

Referenced Cited
U.S. Patent Documents
D227368 June 1973 Housell
D246255 November 1, 1977 Truette
D283046 March 18, 1986 Botich
D290082 June 2, 1987 Song
D295356 April 26, 1988 Nambu et al.
3751633 August 1973 Green et al.
Patent History
Patent number: D335537
Type: Grant
Filed: Jan 23, 1991
Date of Patent: May 11, 1993
Assignees: Olympus Optical Company, Ltd. (Tokyo), Denken Co., Ltd. (Kyoto)
Inventors: Yasuharu Hakamatsuka (Tokyo), Kazuhiro Watanabe (Tokyo), Mamoru Aihara (Tokyo), Manabu Takahashi (Tokyo), Toshio Shimizu (Kyoto)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Attorney: Carroll F. Palmer
Application Number: 7/645,279
Classifications
Current U.S. Class: Dental (46) (D24/176)