3433653

Information

• Patent Grant
• 3433653

• References
• Source

• Patent Number

  3,433,653

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1969
  55 years ago

• CPC

  • A62D7/00 - Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets
  • A62B18/082 - Assembling eyepieces, lenses or vision-correction means in or on gas-masks
  • C09K3/18 - for application to surfaces to minimize adherence of ice, mist or water thereto Thawing or antifreeze materials for application to surfaces

• US Classifications

  • 106 - Compositions: coating or plastic
  • 002 - Apparel
  • 351 - Optics: eye examining, vision testing and correcting
  • 523 - Synthetic resins or natural rubbers
  • 524 - Synthetic resins or natural rubbers