3526292

Information

• Patent Grant
• 3526292

• References
• Source

• Patent Number

  3,526,292

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1970
  55 years ago

• CPC

  • G10K11/16 - Methods or devices for protecting against, or damping of, acoustic waves
  • G03B21/42 - Preventing damage to film due to abnormal operation of projector

• US Classifications

  • 181 - Acoustics
  • 359 - Optical: systems and elements