Patents by Inventor Alexander Tam

Alexander Tam 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).

  • Envelope feeder
    Patent number: 4585223
    Abstract: An envelope feeder for mounting on a computer printer, electronic typewriter, word processor or other programmable printer. The envelope feeder uses a centrally located drive separator roller and separating tongue to effect envelope separation.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: April 29, 1986
    Inventor: Alexander Tam