2657467

Information

• Patent Grant
• 2657467

• References
• Source

• Patent Number

  2,657,467

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1953
  71 years ago

• CPC

  • G03F1/00 - Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles Mask blanks or pellicles therefor Containers specially adapted therefor Preparation thereof
  • Y10T409/308904 - Multiple row dividing head

• US Classifications

  • 033 - Geometrical instruments
  • 409 - Gear cutting, milling, or planing