TREA

Apparatus

Follow

Industry

  • CPC
  • D21H1/06
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

DTEXTILES PAPER D21Papermaking D21HPULP COMPOSITIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D IMPREGNATING OR COATING OF PAPER TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G PAPER NOT OTHERWISE PROVIDED FOR D21H1/00Paper Cardboard

Current Industry

D21H1/06Apparatus
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2726979
    • Patent number 2,726,979
    • Issue date Dec 13, 1955
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2712342
    • Patent number 2,712,342
    • Issue date Jul 5, 1955
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2221441
    • Patent number 2,221,441
    • Issue date Nov 12, 1940
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE