![]() ![]() 230000003287 optical Effects 0.000 claims abstract description 57. ![]() 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 Fujimoto Photo Industrial Co Ltd filed Critical Fujimoto Photo Industrial Co Ltd Priority to US06/126,720 priority Critical patent/US4286867A/en Application granted granted Critical Publication of US4286867A publication Critical patent/US4286867A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Fujimoto Photo Industrial Co Ltd 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 or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US06/126,720 Inventor Atumi Kashiwagi Current Assignee (The listed assignees may be inaccurate. USED PHOTOGRAPHIC ENLARGERS PDFGoogle Patents Light source unit assembly for photographic enlargerÄownload PDF Info Publication number US4286867A US4286867A US06/126,720 US12672080A US4286867A US 4286867 A US4286867 A US 4286867A US 12672080 A US12672080 A US 12672080A US 4286867 A US4286867 A US 4286867A Authority US United States Prior art keywords diffusing light source light filter unit assembly Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4286867A - Light source unit assembly for photographic enlarger US4286867A - Light source unit assembly for photographic enlarger ![]()
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