Remote supervisory radio signaling system

• US 2,577,751 A
• Filed: 03/24/1945
• Issued: 12/11/1951
• Est. Priority Date: 04/12/1941
• Status: Expired due to Term

• Current Assignee: William S. Halstead
• Original Assignee: William S. Halstead
• Inventors: Halstead, William S.
• Application Number:
  US02/584,589
• Time in Patent Office: 2,453 Days
• US Class Current: 340/907
• CPC Class Codes: B61L 15/009 On-board display devices
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096758 where no selection takes place on the transmitted or the received information
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station

Claims