2122370

Information

• Patent Grant
• 2122370

• References
• Source

• Patent Number

  2,122,370

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1938
  87 years ago

• CPC

  • G03B7/00 - Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
  • G01R1/02 - General constructional details
  • G01R13/08 - Electromechanical recording systems using a mechanical direct-writing method
  • G01R17/02 - Arrangements in which the value to be measured is automatically compared with a reference value
  • H01C10/24 - the contact moving along turns of a helical resistive element, or vica versa

• US Classifications

  • 338 - Electrical resistors