| D | SK | TEXTILES; PAPER |
| D21 | USK | PAPER |
| D21 | KL | PAPER-MAKING; PRODUCTION OF CELLULOSE |
| D21G | UKL | CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H) |
| D21G 1/00 | HGR | Calenders (if restricted to the treatment of particular materials, see the relevant place, e.g. B29C 43/24, D06); Smoothing apparatus [1, 2006.01] |
| D21G 1/02 | UGR1 | | . | Rolls; Their bearings (in general F16C 13/00) [1, 2006.01] |
|
| D21G 3/00 | HGR | Doctors [1, 2006.01] |
| D21G 3/02 | UGR1 | | . | for calenders [1, 2006.01] |
|
| D21G 3/04 | UGR1 | | . | for drying cylinders [1, 2006.01] |
|
| D21G 5/00 | HGR | Safety devices [1, 2006.01] |
| D21G 7/00 | HGR | Damping devices [1, 2006.01] |
| D21G 9/00 | HGR | Other accessories for paper-making machines [1, 2006.01] |