1821578

Information

• Patent Grant
• 1821578

• References
• Source

• Patent Number

  1,821,578

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1931
  93 years ago

• CPC

  • G09F7/165 - The letters, numerals, or other symbols being obtained by a treatment of the support
  • B44B5/009 - by multi-step processes
  • Y10S40/911 - Automobile body identification
  • Y10T29/49986 - Subsequent to metal working
  • Y10T29/49995 - Shaping one-piece blank by removing material

• US Classifications

  • 029 - Metal working
  • 040 - Card, picture, or sign exhibiting
  • 072 - Metal deforming
  • 101 - Printing