FEDERAL
SCIENTIFIC DEVICES-NAMELY, PROJECTING MICROSCOPES, OPAQUE PROJECTORS FOR DRAWING, CAMERA LUCIDAS, OPTICAL CONSTRUCTION SETS, PICTURE PROJECTORS, READING MACHINES, STEREOSCOPES, AND PANTOGRAPHS; LABORATORY INSTRUMENTS-NAMELY, MICRO PROJECTORS, ORTHOPTIC TRAINING MACHINES, OPTICAL BENCHES, POLARIZED LIGHT TESTING AND PROJECTING EQUIPMENT, PROJECTING EQUIPMENT FOR PROJECTING LARGE OR REDUCED IMAGES OF TRANSPARENT OR OPAQUE IMAGES, FINGERPRINT AND STAMP MAGNIFIERS, MICRO FILM READING MACHINES, MI...
Expired · November 13, 1945 · 71491470 ·