3879989

Information

• Patent Grant
• 3879989

• References
• Source

• Patent Number

  3,879,989

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • G02F1/13 - based on liquid crystals
  • B26B19/384 - Dry-shaver foils; Manufacture thereof
  • G03H3/00 - Holographic processes or apparatus using ultrasonic, sonic or infrasonic waves for obtaining holograms Processes or apparatus for obtaining an optical image from them
  • Y10S359/90 - Methods
  • Y10S359/901 - Acoustic holography

• US Classifications

  • 073 - Measuring and testing
  • 359 - Optical: systems and elements
  • 367 - Communications, electrical: acoustic wave systems and devices