| 1/00 | Bakers' ovens |
| 1/02 | Bakers' ovens characterised by the heating arrangements |
| 1/04 | Bakers' ovens characterised by the heating arrangements Ovens heated by fire before baking only |
| 1/06 | Bakers' ovens characterised by the heating arrangements Ovens heated by radiators |
| 1/08 | Bakers' ovens characterised by the heating arrangements Ovens heated by radiators by steam-heated radiators |
| 1/10 | Bakers' ovens characterised by the heating arrangements Ovens heated by radiators by radiators heated by fluids other than steam |
| 1/14 | Bakers' ovens characterised by the heating arrangements Ovens heated by radiators Arrangement of radiators |
| 1/22 | Bakers' ovens characterised by the heating arrangements Ovens heated by radiators by electric radiators (A21B 2/00 takes precedence; electric heating elements H05B) |
| 1/24 | Bakers' ovens characterised by the heating arrangements Ovens heated by media flowing therethrough |
| 1/26 | Bakers' ovens characterised by the heating arrangements Ovens heated by media flowing therethrough by hot air |
| 1/28 | Bakers' ovens characterised by the heating arrangements Ovens heated by media flowing therethrough by gaseous combustion products |
| 1/33 | Bakers' ovens characterised by the heating arrangements Ovens heated directly by combustion products (A21B 1/04 takes precedence) |
| 1/36 | Bakers' ovens characterised by the heating arrangements Ovens heated directly by hot fluid (A21B 1/06, A21B 1/33 take precedence) |
| 1/40 | Bakers' ovens characterised by the means for regulating the temperature (temperature-sensitive elements G01K) |
| 1/42 | Bakers' ovens characterised by the baking surfaces moving during the baking (conveying in general B65G) |
| 1/44 | Bakers' ovens characterised by the baking surfaces moving during the baking (conveying in general B65G) with surfaces rotating in a horizontal plane |
| 1/46 | Bakers' ovens characterised by the baking surfaces moving during the baking (conveying in general B65G) with surfaces suspended from an endless conveyer or a revolving wheel |
| 1/48 | Bakers' ovens characterised by the baking surfaces moving during the baking (conveying in general B65G) with surfaces in the form of an endless band |
| 1/50 | Bakers' ovens characterised by having removable baking surfaces |
| 1/52 | Bakers' ovens Portable ovens; Collapsible ovens (travelling or camp cookers A47J 33/00) |
