Control system for an AC servomotor having a permanent magnet ty

Crystal diffraction lens with variable focal length

Cushioning bite plate adapter for x-ray film holder

Dental aiming device

Dental film cartridge cushion

Dental film packet

Dental film packet

Dental film packet improvement and method for effecting same

Dental instrument for optimal positioning of an X-ray film suppo

Dental instrument for optimal positioning of an X-ray film suppo

Dental roentgenograph film cover and method for improving...

Dental sensor clamp

Dental X-ray aiming device

Dental x-ray aiming device for longitudinal radiographic...

Dental x-ray alignment device

Dental x-ray bite block and alignment method

Dental x-ray block

Dental X-ray clamping device with a multi-orientation support

Dental X-ray diagnostic installation

Dental X-ray film back