2211991

Information

• Patent Grant
• 2211991

• References
• Source

• Patent Number

  2,211,991

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1940
  84 years ago

• CPC

  • A45D6/02 - Devices for winding the hair upon steep-curlers
  • H03D1/26 - by means of transit-time tubes
  • H03D11/02 - for amplitude-modulated oscillations

• US Classifications

  • 132 - Toilet