2976636

Information

• Patent Grant
• 2976636

• References
• Source

• Patent Number

  2,976,636

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1961
  63 years ago

• CPC

  • G09B29/12 - Relief maps
  • Y10T29/49995 - Shaping one-piece blank by removing material
  • Y10T83/839 - Mirror or lens
  • Y10T409/30112 - Process
  • Y10T409/302856 - For using planar templet in cutting profile [e.g., contour map from planar map, etc.]

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 012 - Boot and shoe making
  • 029 - Metal working
  • 030 - Cutlery
  • 033 - Geometrical instruments
  • 072 - Metal deforming
  • 083 - Cutting
  • 144 - Woodworking
  • 353 - Optics: image projectors