Rear-projection lectern

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Description

FIG. 1 is a perspective view of a rear-projection lectern showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left side elevational view thereof; and

FIG. 6 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D202830 November 1965 Paull
D219919 February 1971 Cargill
D220658 May 1971 Christoffersen et al.
D229716 December 1973 Shirley
D234009 December 1974 Corderman et al.
3169442 February 1965 Reddle et al.
4379312 April 5, 1983 Lee
Patent History
Patent number: D288571
Type: Grant
Filed: Apr 20, 1984
Date of Patent: Mar 3, 1987
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventor: Dennis F. VanderWerf (Cottage Grove, MN)
Primary Examiner: Louis S. Zarfas
Attorneys: Donald M. Sell, James A. Smith, David W. Anderson
Application Number: 6/602,514
Classifications
Current U.S. Class: D16/14