Patents by Inventor Bengt R. A. Wahlin

Bengt R. A. Wahlin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dental saliva ejector
    Patent number: 4325695
    Abstract: A dental saliva ejector has a perforated wall provided at each side of a suction opening to prevent tongue and muceous membranes of the patient to be sucked into the opening. The ejector further has a portion intended to rest against a front tooth of the mandible and a securing means intended to contact the chin such that the ejector is held in place by a clamping action between chain and front tooth to prevent pressure against the mouth bottom.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: April 20, 1982
    Inventors: Bo Sundelin, Bengt R. A. Wahlin, B. Goran Johansson