Dental shade guide

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Information

Patent Grant
D328348

References
Source

Patent Number
D328,348
Date Filed
Friday, August 10, 1990
34 years ago
Date Issued
Tuesday, July 28, 1992
32 years ago

Inventors
Original Assignees
- 3M COMPANY
Examiners
- Lucas; Susan J.
- Tung; M. H.
Agents
- Griswold; Gary L.
- Kirn; Walter N.
- Christoff; James D.

US Classifications
- D24 - Medical and laboratory equipment
Field of Search
- US
- D24 133
- D24 140
- D24 176-182
- 433 26
- 433 74
- 433 72
- 433 149
- 433 2021
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a dental shade guide, as shown and described.

US Referenced Citations (9)

Number	Name	Date	Kind
1518608	Shoa	Dec 1924
2249634	Myerson	Jul 1941
2262641	Hayward	Nov 1941
2765534	Bloom et al.	Oct 1956
2805478	Adams	Sep 1957
3521357	Berglund et al.	Jul 1970
4115922	Alderman	Sep 1978
4618325	Appelle	Oct 1986
4810193	Wieder	Mar 1989

Non-Patent Literature Citations (2)

Entry
"Lumin Shade Guide" Vident Publication.
"Suggestions For Shade Selection With Your New Trubyte Bioform Extended Range Shade Guide", Dentsply International Inc. (1973, 1983).