Patents by Inventor Iver L. Johnson

Iver L. Johnson 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).

  • Apparatus and method for dispensing and reinforcing cementitious materials
    Patent number: 4042175
    Abstract: An improved apparatus for constructing bodies of glass-reinforced cement by a spraying process. The invention includes apparatus for improving the uniformity of distribution of glass fibers in the cement, and apparatus for preventing expensive and inconvenient interruptions in the process due to plugging of the cement gun nozzle.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: August 16, 1977
    Inventor: Iver L. Johnson
  • Retail sales building
    Patent number: D254751
    Type: Grant
    Filed: November 2, 1978
    Date of Patent: April 15, 1980
    Inventors: Michael F. Adler, Alan S. Cohen, Cal F. Graser, Thomas R. Hamilton, Iver L. Johnson