Coke-oven valve construction

• US 1,656,355 A
• Filed: 04/21/1921
• Issued: 01/17/1928
• Est. Priority Date: 04/21/1921
• Status: Expired due to Term

• Current Assignee: George Huffmann
• Original Assignee: George Huffmann
• Inventors: GEORGE HUFFMANN
• Application Number:
  US02/463,419
• Time in Patent Office: 2,462 Days
• US Class Current: 137/637.5
• CPC Class Codes: C10B 27/06 Conduit details, e.g. valves
• CPC Class Codes: Y10T 137/8225 Position or extent of motion indicator
• CPC Class Codes: Y10T 137/86292 System with plural openings, one a gas vent or access opening
• CPC Class Codes: Y10T 137/87145 Concentric, central valve removable
• CPC Class Codes: Y10T 137/9247 With closure

Claims