Optical elements: — Lens blanks (other than for spectacles)
089275 · 1991-08-07 — Glass Lens Blanks; GRI 1; spectacles; other than spectacles; optically worked
Your letter and samples were forwarded to this office for a response. FACTS: Ohara's products under consideration are optical glass lens blanks and optical glass in finished lens element form. The optical glass lens blanks are imported in rough molded blank form with no optical (light transmission) properties. They are made of optical quality glass called "clear" which has no striations, bubbles, or inclusions. In Ohara's catalog the optical glass lens blanks are cataloged as SFL6. These optical glass lens blanks can be used to produce lenses for optical instruments or spectacle lenses.…
087394 · 1991-03-11 — Glass Rods Or Tubes, Unworked; Laboratory Or Pharmaceutical
23/90 (CLA-1:SV:C:I:2:CAW), dated March 20, 1990, regarding the classification of certain articles of glass. FACTS: The merchandise consists of various articles of glass which are described by the importer as Rotosil, HQG, HSQ, BQ-B, Suprasil, Infrasil, Herasil, Homosil, Heralux, HLX-WG-LS, WG-HIP, and M235. Many of the forms and uses of the articles were described by the importer at the September 12, 1990 meeting, and in the September 25, 1990 submission. The descriptions were supplemented in the January 24, 1991 facsimile transmission. Rotosil is opaque fused silica produced by…
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