| 349 / | HD | LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS |
| 56 | DF | PARTICULAR STRUCTURE {7} |
| 74 | ![]() | .~ Interconnection of plural cells in series {2} |
| 75 | DF | .~.~> For compensation of birefringence effects {1} |
| 77 | DF | .~.~> With particular cooperation between cells (e.g., alternating selection or simultaneous selection of cells) {4} |