3849820

Information

• Patent Grant
• 3849820

• References
• Source

• Patent Number

  3,849,820

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1974
  50 years ago

• CPC

  • B28B21/00 - Methods or machines specially adapted for the production of tubular articles
  • B28B7/386 - Cleaning
  • E04G19/006 - Cleaning devices

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning