3927461

Information

• Patent Grant
• 3927461

• References
• Source

• Patent Number

  3,927,461

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1975
  49 years ago

• CPC

  • B29C59/00 - Surface shaping of articles
  • A63H33/22 - Optical, colour, or shadow toys
  • B29C67/0014 - for shaping tubes or blown tubular films
  • F21S10/00 - Lighting devices or systems producing a varying lighting effect
  • F21V9/14 - for producing polarised light
  • A63F2009/0638 - Polaroid filters
  • B29L2031/722 - Decorative or ornamental articles
  • B29L2031/7472 - Lampshades
  • Y10T29/49812 - Temporary protective coating, impregnation, or cast layer

• US Classifications

  • 029 - Metal working
  • 065 - Glass manufacturing
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 359 - Optical: systems and elements