Concrete expansion joints

• US 2,839,973 A
• Filed: 01/03/1955
• Issued: 06/24/1958
• Est. Priority Date: 01/03/1955
• Status: Expired due to Term

• Current Assignee: Carl J. Heltzel, Trust Company Union Savings
• Original Assignee: Carl J. Heltzel, Trust Company Union Savings
• Inventors: TRUST COMPANY UNION SAVINGS, Heltzel, Carl J.
• Application Number:
  US03/479,529
• Time in Patent Office: 1,268 Days
• US Class Current: 404/2
• CPC Class Codes: E01C 11/126 Joints with only metal and prefabricated packing or filling
• CPC Class Codes: E01C 11/14 Dowel assembly ; Design or construction of reinforcements in the area of joints coupling devices for prefabricated units E01C5/005; combined with characteristic packings E01C11/08 - E01C11/12; removable holders E01C23/045

Claims