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AU129715B2 - An improved optical projection apparatus for projecting transparencies - Google Patents
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AU129715B2 - An improved optical projection apparatus for projecting transparencies - Google Patents

An improved optical projection apparatus for projecting transparencies

Info

Publication number
AU129715B2
AU129715B2 AU24617/45A AU2461745A AU129715B2 AU 129715 B2 AU129715 B2 AU 129715B2 AU 24617/45 A AU24617/45 A AU 24617/45A AU 2461745 A AU2461745 A AU 2461745A AU 129715 B2 AU129715 B2 AU 129715B2
Authority
AU
Australia
Prior art keywords
projection apparatus
optical projection
improved optical
transparencies
projecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU24617/45A
Other versions
AU2461745A (en
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of AU2461745A publication Critical patent/AU2461745A/en
Publication of AU129715B2 publication Critical patent/AU129715B2/en
Expired legal-status Critical Current

Links

AU24617/45A 1945-11-06 An improved optical projection apparatus for projecting transparencies Expired AU129715B2 (en)

Publications (2)

Publication Number Publication Date
AU2461745A AU2461745A (en) 1946-04-12
AU129715B2 true AU129715B2 (en) 1946-04-12

Family

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