|
EP0178014A2
|
|
Visual aid especially for weak-sighted persons
|
|
NL8502142A
|
|
Method for manufacturing an eyewear glasses.
|
|
BE900455A
|
|
Finishing concave spectacle lens - by chamfering peripheral area to reduce rim thickness and grinding down sharp edged transition
|
|
BE900456A
|
|
Finishing concave spectacle lens - chamfering peripheral area to reduce rim thickness and grinding to produce horizontally oval concavity
|
|
BE899997A
|
|
Bi-convex spectacle lens prodn. - by flat-grinding concave rear face with reduced thickness edge, then convex grinding central portion
|
|
BE899955A
|
|
Method for producing a glass for myopes.
|
