1947916

Information

• Patent Grant
• 1947916

• References
• Source

• Patent Number

  1,947,916

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1934
  90 years ago

• CPC

  • B21D37/20 - Making tools by operations not covered by a single other subclass
  • Y10S76/04 - Chromium

• US Classifications

  • 076 - Metal tools and implements, making
  • 033 - Geometrical instruments
  • 101 - Printing
  • 430 - Radiation imagery chemistry: process, composition, or product thereof