2290507

Information

• Patent Grant
• 2290507

• References
• Source

• Patent Number

  2,290,507

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1942
  82 years ago

• CPC

  • B66F3/25 - Constructional features
  • B66F7/18 - by a single central jack
  • E21D15/155 - Built-in cleaning devices

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning