Patent
   D328348
Priority
Aug 10 1990
Filed
Aug 10 1990
Issued
Jul 28 1992
Expiry
Jul 28 2006
Assg.orig
Entity
unknown
5
9
n/a
The ornamental design for a dental shade guide, as shown and described.

FIG. 1 is a bottom, front and left side perspective view of a dental shade guide showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Drake, Gerald E., Longhini, Ross A., Kvitrud, James R., Neisse, Daryl L.

Patent Priority Assignee Title
D372081, Jan 19 1995 Ceramco Inc. Dental shade guide
D585138, Mar 20 2008 3M Innovative Properties Company Shade guide capsule
D587809, Mar 20 2008 3M Innovative Properties Company Shade guide capsule
D758591, Jun 20 2013 Ivoclar Vivadent AG Shade guide
D925042, Mar 12 2019 SOLVENTUM INTELLECTUAL PROPERTIES COMPANY Dental composite shade guide
Patent Priority Assignee Title
1518608,
2249634,
2262641,
2765534,
2805478,
3521357,
4115922, Sep 20 1976 Dental crown and bridge shading system
4618325, Mar 18 1985 Custom dental shade guide tab
4810193, Apr 23 1987 Tooth shade guide casting form
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 10 1990Minnesota Mining and Manufacturing Company(assignment on the face of the patent)
Aug 10 1990NEISSE, DARYL L Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0054080964 pdf
Aug 10 1990LONGHINI, ROSS A Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0054080964 pdf
Aug 10 1990DRAKE, GERALD E Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0054080964 pdf
Aug 10 1990KVITRUD, JAMES R Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0054080964 pdf
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