Electric heating unit

• US 1,328,229 A
• Filed: 05/13/1918
• Issued: 01/13/1920
• Est. Priority Date: 05/13/1918
• Status: Expired due to Term

• Current Assignee: Frank W. Hewitt
• Original Assignee: Frank W. Hewitt
• Inventors: Hewitt, Frank W.
• Application Number:
  US02/234,068
• Time in Patent Office: 610 Days
• US Class Current: 219/542
• CPC Class Codes: H05B 2203/004 using zigzag layout
• CPC Class Codes: H05B 2203/014 Heaters using resistive wires or cables not provided for in H05B3/54
• CPC Class Codes: H05B 2203/017 Manufacturing methods or apparatus for heaters
• CPC Class Codes: H05B 2203/032 Heaters specially adapted for heating by radiation heating
• CPC Class Codes: H05B 2203/036 Heaters specially adapted for garment heating
• CPC Class Codes: H05B 3/342 heaters used in textiles

Claims