Patents by Inventor Philip J. Lindemann

Philip J. Lindemann 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).

  • Patent number: 4180776
    Abstract: An automatic channel scanning attachment is described for connecting to a CB radio transceiver having a manual channel selection. The attachment is designed to automatically manipulate the manual channel selector to scan the channel to select an active channel. The attachment includes a separate chassis having a wire for connecting to the transceiver squelch circuit to receive a squelch signal. The attachment includes a signal polarity network for producing a process signal of a desired polarity in response to a squelch signal of an unknown polarity. The process signal activates a scanning control network to generate a scanning signal that may be time delayed with respect to the squelch signal. The scanning signal is used to activate a selector actuator means to manipulate the manual channel selector to scan the channels until an active channel is found.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: December 25, 1979
    Inventor: Philip J. Lindemann
  • Patent number: D251247
    Type: Grant
    Filed: April 5, 1977
    Date of Patent: March 6, 1979
    Assignee: Lin-Tronics, Inc.
    Inventor: Philip J. Lindemann