Patents by Inventor Vaclav Stverak

Vaclav Stverak 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).

  • Selective calling arrangement
    Patent number: 4075564
    Abstract: A selective calling arrangement for use in a radio communications system or the like. Each of the receivers in the system is assigned an unique binary code number which is transmitted to the receivers by r.f. pulses of fixed width separated by one of two fixed intervals respectively representing a binary "1" or a binary "0", the selective calling system being unaffected by the chopping of pulses on the transmission path.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: February 21, 1978
    Assignee: Autophon Aktiengesellschaft
    Inventors: Christian Masur, Vaclav Stverak