Transmissive type overhead projector

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Description

FIG. 1 is a perspective view showing the top, front, and left side of a transmissive type overhead projector, showing the new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D197258 December 1963 Highberger
D216565 February 1970 Holderied
D221901 September 1971 Patla
D229780 January 1974 Ishida
D244602 June 7, 1977 Mango et al.
3416857 December 1968 Lookabaugh
3979160 September 7, 1976 Anderson et al.
5027219 June 25, 1991 Stuttler
Foreign Patent Documents
1-136135 May 1989 JPX
Other references
  • Overhead Projectors Catalog, 1968 p. 3.
Patent History
Patent number: D349715
Type: Grant
Filed: Oct 22, 1992
Date of Patent: Aug 16, 1994
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventor: Michael E. Darland (Austin, TX)
Primary Examiner: Bernard Ansher
Assistant Examiner: Adir Aronovich
Attorneys: Gary L. Griswold, Walter N. Kirn, David W. Anderson
Application Number: 0/2,321
Classifications
Current U.S. Class: Overhead Or Opaque Type (D16/232)