ZA705005B - System for automatically focusing a transparency image on projection screen - Google Patents

System for automatically focusing a transparency image on projection screen

Info

Publication number
ZA705005B
ZA705005B ZA705005A ZA705005A ZA705005B ZA 705005 B ZA705005 B ZA 705005B ZA 705005 A ZA705005 A ZA 705005A ZA 705005 A ZA705005 A ZA 705005A ZA 705005 B ZA705005 B ZA 705005B
Authority
ZA
South Africa
Prior art keywords
projection screen
automatically focusing
transparency image
transparency
image
Prior art date
Application number
ZA705005A
Inventor
O Szymber
Original Assignee
Gaf Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gaf Corp filed Critical Gaf Corp
Publication of ZA705005B publication Critical patent/ZA705005B/en

Links

ZA705005A 1969-07-22 1970-07-21 System for automatically focusing a transparency image on projection screen ZA705005B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84331169A 1969-07-22 1969-07-22

Publications (1)

Publication Number Publication Date
ZA705005B true ZA705005B (en) 1971-04-28

Family

ID=25289601

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA705005A ZA705005B (en) 1969-07-22 1970-07-21 System for automatically focusing a transparency image on projection screen

Country Status (1)

Country Link
ZA (1) ZA705005B (en)

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