Patents by Inventor Nils E. V. Martensson

Nils E. V. Martensson 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).

  • Retractable antenna
    Patent number: 4920352
    Abstract: A retractable antenna is in the form of a tape (7) which is slidably mounted in a passageway (6). An electrical contact (9) for making connection to the antenna is provided on the rear wall (3) of the passageway. The tape (7) or the passageway (6) or both are shaped so as to form a bend, e.g. a bow, across the width of the tape so that (a) the convex side of the tape confronts the contact (9) and (b) rigidity is imparted to the tape to keep it upright when extended from the passageway. This antenna is slim and lightweight and therefore ideally suited for use with a compact portable radio telephone.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: April 24, 1990
    Assignee: Technophone Limited
    Inventors: Nils E. V. Martensson, Michael B. Ashdown
  • Pocket telephone
    Patent number: D289896
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: May 19, 1987
    Assignee: Technophone Ltd.
    Inventors: Nils E. V. Martensson, John J. Runnalls, Keith Paver, John R. Kinneir, Craig I. Wightman
  • Handset radio telephone
    Patent number: D299719
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: February 7, 1989
    Assignee: Technophone Limited of Ashwood House
    Inventors: Nils E. V. Martensson, Anthony B. Harrup, Mark Powell, Roger Wilkins, Ron Major, Chris M. Harrison, Andrew Homan, Francis Baldry
  • Portable radio/telephone instrument
    Patent number: D302423
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: July 25, 1989
    Assignee: Technophone Limited
    Inventors: Nils E. V. Martensson, Peter D. Harrison, David C. Perry, John H. New, Ron Major, Craig Dolwin, Malcolm C. Cant