Patents by Inventor David M. Macklem

David M. Macklem 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).

  • RF Shielding support for stacked electrical circuit boards
    Patent number: 4339628
    Abstract: A combined supporting arrangement and RF shield for stacked circuit boards has several conducting shields, each shield covering a respective circuit board and having an edge flange, part of the flange being turned under to space a particular circuit board from the next lower circuit board in the stack, and part of the flange being turned out to engage a clamp projecting from a baseboard, the clamp being common to all the shields.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: July 13, 1982
    Assignee: Northern Telecom Limited
    Inventors: Gabriel Marcantonio, David M. Macklem