| 359 / | HD | OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS |
| 362 | DF | COMPOUND LENS SYSTEM {8} |
| 368 | DF | .~ Microscope {10} |
| 372 | DF | .~.~ With plural optical axes {2} |
| 374 | DF | .~.~.~ Plural oculars {1} |
| 375 | DF | .~.~.~.~ Binocular {1} |
| 376 | ![]() | .~.~.~.~.~ Stereoscopic {1} |
| 377 | DF | .~.~.~.~.~.~> With single or parallel objectives {1} |