Patents by Inventor Amadeo Chapa

Amadeo Chapa 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).

  • Ditching over buried lines
    Patent number: 4329084
    Abstract: The method of ditching over a buried line involves making a hole, in advance of ditching, down to a level near a section of the buried line lying at the intersection with a proposed trench, spanning the line section with a line protector, and driving a ditching machine so that its excavating member makes the trench and in so doing rides in the trench over the protector and above the line section.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: May 11, 1982
    Inventor: Amadeo Chapa
  • Pipeline protector
    Patent number: D264494
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: May 18, 1982
    Inventor: Amadeo Chapa