1679850

Information

• Patent Grant
• 1679850

• References
• Source

• Patent Number

  1,679,850

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1928
  96 years ago

• CPC

  • G03B21/52 - by prepared film
  • D01F2/28 - from organic cellulose esters or ethers

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes