Clamp on type electrical measuring instrument

• US 2,663,845 A
• Filed: 01/28/1950
• Issued: 12/22/1953
• Est. Priority Date: 01/28/1950
• Status: Expired due to Term

• Current Assignee: Koch, Samuel J.
• Original Assignee: Koch, Samuel J.
• Inventors: Koch, Samuel J.
• Application Number:
  US03/141,066
• Time in Patent Office: 1,424 Days
• US Class Current: 324/127
• CPC Class Codes: G01R 1/22 Tong testers acting as secondary windings of current transformers
• CPC Class Codes: G01R 15/186 using current transformers with a core consisting of two or more parts, e.g. clamp-on type G01R15/142 - G01R15/16 take precedence; tong testers G01R1/22

Claims