3703138

Information

• Patent Grant
• 3703138

• References
• Source

• Patent Number

  3,703,138

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1972
  52 years ago

• CPC

  • B41B27/28 - Control, indicating, or safety devices for individual operations or machine elements
  • B41B21/26 - with means for selecting individual optical paths

• US Classifications

  • 396 - Photography