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TitleMakerDate Made
'Bridge' fused trifocal lens20th c.View
'Clarlet ST 28' trifocal lensZeiss20th c.View
'Cromwell' fused trifocal lens20th c.View
'Igard' trifocal lensCombined Optical Industries Ltd1961View
'Occupational' trifocal lensSola Optical Co20th c.View
'Occupational' trifocal lensSola Optical Co20th c.View
'Orma' concentric trifocal lensEssilor1963View
'Quintex' fused concentric downcurve trifocal lens & envelopeHaussmann20th c.View
'Supervis 45' Solid concentric trifocal lens demonstratorUnited Kingdom Optical Company LtdMid-Late 20th c.View
'Supervis' Solid concentric trifocal lens with prismatic near segmentUnited Kingdom Optical Company Ltd1961View
'Tri-Vue, D on D' fused trifocal lens20th c.View
'Trivis' fused trifocal lensUnited Kingdom Optical Company Ltd20th c.View
'Vision-Ease' fused trifocal lens20th c.View
A. J. Cross' 'CV' lenses in rimless spectacle frameAmerican Optical Companyc.1923View
Double 'Univis' ('Academy') fused trifocal lensUnited Kingdom Optical Company Ltd20th c.View
Double 'Univis' ('Academy') fused trifocal lensUnited Kingdom Optical Company Ltd20th c.View
Double circular segment fused trifocal lensView
Double upcurve trifocal lensView
Executive trifocal lensView
Executive-type trifocal lensView
Polycarbonate S728 trifocal lens20th c.View
Solid concentric invisible downcurve trifocal lensView
Trifocal lensSola Optical Co20th c.View
Trifocal lens20th c.View
Trifocal lensBausch & Lomb20th c.View
Uni-lite Ultra 7CV trifocal lensc.1967View
Up and downcurve solid trifocal lensView
Up and downcurve solid trifocal lensView
Up and downcurve trifocal lensView

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