Adjustable focus spectacles with non-circular lenses
US2013162940A1
Spectacles With Removable Optics
US2013176527A1
Structure and method for face form retention in plastic eyeglasses and eyeglass frames
US2012140168A1
Variable focus spectacles with adjustable connector
US2010277686A1
Detachable lens for variable focus spectacles
EP1112525A1
Actuation mechanism for variable focal length spectacles
PT102383A
Variable lenses for hidden
TW477902B
Variable focal length lens
FI19992550A
Adjustable eyeglass lens
DK199901659A
Variable lens
ITMI992412D0
Variable spectacle lens for varying the focal length comprises rear ring spaced from the front ring by hinges and with an actuator while inside diameter has line of contact between free area of the membrane
GR990100395A
Variable spectacle lens
GB9926573D0
Variable focal length liquid-filled spectacle lens with membrane support member
GB9919928D0
Liquid-filled variable focus lens
AU4407999A
Field-customizable variable focal length lens
US5268767A
Image pattern for facsimile receiver with reciprocating printhead and method
US5095449A
Expansion module for computer printer font cartridge
