Dental shade guide
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Description
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.
Referenced Cited
U.S. Patent Documents
Other references
1518608 | December 1924 | Shoa |
2249634 | July 1941 | Myerson |
2262641 | November 1941 | Hayward |
2765534 | October 1956 | Bloom et al. |
2805478 | September 1957 | Adams |
3521357 | July 1970 | Berglund et al. |
4115922 | September 26, 1978 | Alderman |
4618325 | October 21, 1986 | Appelle |
4810193 | March 7, 1989 | Wieder |
- "Lumin Shade Guide" Vident Publication. "Suggestions For Shade Selection With Your New Trubyte Bioform Extended Range Shade Guide", Dentsply International Inc. (1973, 1983).
Patent History
Patent number: D328348
Type: Grant
Filed: Aug 10, 1990
Date of Patent: Jul 28, 1992
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Daryl L. Neisse (Lake Elmo, MN), Ross A. Longhini (Woodbury, MN), Gerald E. Drake (Oakdale, MN), James R. Kvitrud (White Bear Lake, MN)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Attorneys: Gary L. Griswold, Walter N. Kirn, James D. Christoff
Application Number: 7/565,615
Type: Grant
Filed: Aug 10, 1990
Date of Patent: Jul 28, 1992
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Daryl L. Neisse (Lake Elmo, MN), Ross A. Longhini (Woodbury, MN), Gerald E. Drake (Oakdale, MN), James R. Kvitrud (White Bear Lake, MN)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Attorneys: Gary L. Griswold, Walter N. Kirn, James D. Christoff
Application Number: 7/565,615
Classifications
Current U.S. Class:
Dental (46) (D24/176)