Other

Logic Laboratories, Inc.

Herbert L Robinson

David E Bachschmid

Robert C Smallwood

Allen Hanebaum

A lamp socket is provided which contains a ballast, or lamp driver which remains in the socket when the tube is replaced and supports the gas discharge tube. The lamp socket includes connectors for attachment to the gas discharge tube, lamp driver circuitry including an oscillator, power semiconductors, and protective and filter circuitry, and a housing containing the lamp driver circuitry including an oscillator, power semiconductors, and protective and filter circuitry.

Socket and ballast for gas discharge lamp

An instrument and method to measure the position of the occlusal plane of the mouth with reference to the structural features of the cranium. The instrument includes a vertical face bow, positioned on the nasal bridge and the forward edge of the base of the chin. The device employs light beams to make measurements of the patient's occlusal plane and the nose-to-chin distances. The device utilizes an internal processor to make the necessary calculations, provides direct numerical readouts, is battery powered and self-calibrating. The entire device is sealed to permit cold sterilization by liquids.

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Potomac, MD, United States of America

Herbert L Robinson