Patents by Inventor Lambert C. C. Asker

Lambert C. C. Asker 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).

  • Ear protection plug and a method for the production of same
    Patent number: 4384575
    Abstract: An ear protection plug of elastic material which is characterized in that it is in the form of a closed gas-filled hollow body of approximately ovoid longitudinal section, so as to have a first relatively thick end portion (3) and an opposite relatively narrow second end portion (2). Each end portion has a decreasing cross-sectional diameter in the direction towards the respective end, such that the plug has two opposite insertion ends and permits optionally inserting the ear protection plug either with the thick or with the narrow insertion end in the ear canal to fit ear canals of varying size and/or form.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: May 24, 1983
    Inventor: Lambert C. C. Asker