| 摘要 |
1,208,031. 031. Ultraviolet filter. HONEYWELL Inc. April 23, 1968, [April 25, 1967], No. 19046/68 Heading G2J. [Also in Division G1] A filter which transmits visible light and absorbs ultraviolet comprises a thin coating of a substituted benzotriazole material on a glass substrate. |
