Patent
   D335537
Priority
Jul 31 1990
Filed
Jan 23 1991
Issued
May 11 1993
Expiry
May 11 2007
Assg.orig
Entity
unknown
2
6
n/a
The ornamental design for a crystallization furnace for dental prostheses, as shown and described.

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.

Watanabe, Kazuhiro, Takahashi, Manabu, Shimizu, Toshio, Hakamatsuka, Yasuharu, Aihara, Mamoru

Patent Priority Assignee Title
D618353, Oct 14 2008 Nakanishi Inc. Controller for dental or metalworking handpiece
D732094, Jul 20 2012 Ivoclar Vivadent AG Firing plate for a dental furnace
Patent Priority Assignee Title
3751633,
227368,
D246255, Nov 12 1976 Pelton & Crane Company Dental console
D283046, Apr 22 1983 Minnesota Mining and Manufacturing Company Dental furnace
D290082, Jul 05 1984 Gold Star Company, Ltd. Microwave oven
D295356, Dec 27 1984 MATSUSHITA ELECTRIC INDUSTRIAL CO , LTD Microwave oven
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 23 1991Olympus Optical Company, Ltd.(assignment on the face of the patent)
Jan 23 1991Denken Co., Ltd.(assignment on the face of the patent)
Feb 08 1991TAKAHASHI, MANABUDENKEN CO , LTD , A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991AIHARA, MAMORUDENKEN CO , LTD , A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991WATANABE, KAZUHIRODENKEN CO , LTD , A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991HAKAMATSUKA, YASUHARUDENKEN CO , LTD , A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991SHIMIZU, TOSHIOOLYMPUS OPTICAL COMPANY, LIMITED, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991TAKAHASHI, MANABUOLYMPUS OPTICAL COMPANY, LIMITED, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991AIHARA, MAMORUOLYMPUS OPTICAL COMPANY, LIMITED, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991WATANABE, KAZUHIROOLYMPUS OPTICAL COMPANY, LIMITED, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991HAKAMATSUKA, YASUHARUOLYMPUS OPTICAL COMPANY, LIMITED, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
Feb 08 1991SHIMIZU, TOSHIODENKEN CO , LTD , A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0056270724 pdf
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