Apparatus and method for interactive adaptive learning by an...

Apparatus and method utilizing bi-directional relative...

Apparatus and methods for a shape memory spring actuator and...

Apparatus and methods for a shape memory spring actuator and...

Apparatus for automatically feeding and inserting members...

Apparatus for converting electric signals representing data into

Apparatus for displaying letters or pictures

Apparatus for inscribing braille characters on a sheet of paper

Apparatus for interactive adaptive learning by an individual...

Binary information display apparatus

Binary information display device

Block retaining slate for facilitating engagement and alignment

Book for joint reading by a visually impaired person and a sight

Braille architectural sign apparatus

Braille board with movable dot pins

Braille cell

Braille cell and display comprising a plurality of braille...

Braille cell assembly having holder tray

Braille cell cap

Braille cell provided with an actuator comprising a mechanically