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Document Number
US Patent 3880511
Issued Date
April 29, 1975
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Abstract
An improved slide projector is provided for magnifying and projecting transparencies on a receiving surface. The projector is adjustably carried on a column which is mounted on a base. The column is pivotally connected to the base for rotating the projector for projecting a selected transparency on either a horizontal or vertical surface, as desired.
Drawing
Image projector - US Patent 3880511 Drawing
Drawing from US Patent 3880511
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Number of Claims:
7
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Owner
Published
April 29, 1975
Application Number
05/351,389
Filed
April 16, 1973
US Classification
353/79   353/101 353/122 353/71 353/96 355/21 355/63 355/72
Int'l Classification
G03B   27/56   (20060101)   G03B   23/00   (20060101)  
Assistant Examiner
USPTO Field of Search
353/5   353/6   353/39   353/71   353/79   353/95   353/96   353/100   353/101   353/122   355/18   355/21   355/62   355/63   355/72   248/159  
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Claims
Description
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