Traffic signal device

• US 2,105,857 A
• Filed: 01/02/1936
• Issued: 01/18/1938
• Est. Priority Date: 01/02/1936
• Status: Expired due to Term

• Current Assignee: George T. Derby
• Original Assignee: George T. Derby
• Inventors: Derby, George T.
• Application Number:
  US02/057,306
• Time in Patent Office: 747 Days
• US Class Current: 404/11
• CPC Class Codes: E01F 9/602 Upright or projecting signs or signals permanently installed directly on or in the roadway and designed to be depressed by rolling or other loads and then to return to normal position, e.g. collapsible or rockable stop signs, flexible vehicle-striking members for audible warning E01F9/565, E01F13/10 take precedence

Claims