|  | A |
SECTION A — HUMAN NECESSITIES

AGRICULTURE

|  | A21 |
BAKING; EDIBLE DOUGHS

|  | A21B |
BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING (combustion apparatus Fulltext... Hierarchy... Expanded...F23; domestic stoves or ranges being wholly or partly ovens Fulltext... Hierarchy... Expanded...F24B, Fulltext... Hierarchy... Expanded...F24C)

|  | A21B 1/00 |
Bakers' ovens

|  | A21B 1/02 |
· | characterised by the heating arrangements

|  | A21B 1/04 |
· · | Ovens heated by fire before baking only

|  | A21B 1/06 |
· · | Ovens heated by radiators

|  | A21B 1/08 |
· · · | by steam-heated radiators

|  | A21B 1/10 |
· · · | by radiators heated by fluids other than steam

|  | A21B 1/14 |
· · · | Arrangement of radiators

|  | A21B 1/22 |
· · · | by electric radiators (Fulltext... Hierarchy... Expanded...A21B 2/00 takes precedence; electric heating elements Fulltext... Hierarchy... Expanded...H05B)

|  | A21B 1/24 |
· · | Ovens heated by media flowing therethrough

|  | A21B 1/26 |
· · · | by hot air

|  | A21B 1/28 |
· · · | by gaseous combustion products

|  | A21B 1/33 |
· · | Ovens heated directly by combustion products (Fulltext... Hierarchy... Expanded...A21B 1/04 takes precedence)

|  | A21B 1/36 |
· · | Ovens heated directly by hot fluid (Fulltext... Hierarchy... Expanded...A21B 1/06, Fulltext... Hierarchy... Expanded...A21B 1/33 take precedence)

|  | A21B 1/40 |
· | characterised by the means for regulating the temperature (temperature-sensitive elements per se Fulltext... Hierarchy... Expanded...G01K; controlling in general Fulltext... Hierarchy... Expanded...G05)

|  | A21B 1/42 |
· | Characterised by the baking surfaces moving during the baking

|  | A21B 1/44 |
· · | with surfaces rotating in a horizontal plane

|  | A21B 1/46 |
· · | with surfaces suspended from an endless conveyor or a revolving wheel

|  | A21B 1/48 |
· · | with surfaces in the form of an endless band

|  | A21B 1/50 |
· | characterised by having removable baking surfaces

|  | A21B 1/52 |
· | Portable ovens; Collapsible ovens

|  | A21B 2/00 |
Baking apparatus employing high-frequency or infra-red heating

|  | A21B 3/00 |
Parts or accessories of ovens

|  | A21B 3/02 |
· | Doors; Flap gates (general features of doors Fulltext... Hierarchy... Expanded...E06B)

|  | A21B 3/04 |
· | Air-treatment devices for ovens, e.g. regulating humidity

|  | A21B 3/07 |
· | Charging or discharging ovens (Fulltext... Hierarchy... Expanded...A21B 3/18 takes precedence)

|  | A21B 3/10 |
· | Means for illuminating ovens

|  | A21B 3/13 |
· | Baking-tins; Baking forms

|  | A21B 3/15 |
· | Baking sheets; Baking boards

|  | A21B 3/16 |
· | Machines for cleaning or greasing baking surfaces

|  | A21B 3/18 |
· | Discharging baked goods from tins

|  | A21B 5/00 |
Baking apparatus for special goods; Other baking apparatus

|  | A21B 5/02 |
· | Apparatus for baking hollow articles, waffles, pastry, biscuits, etc.

|  | A21B 5/04 |
· | Apparatus for baking cylindrical cakes on spits

|  | A21B 5/06 |
· | Apparatus for baking in salt solution, e.g. for making pretzels

|  | A21B 5/08 |
· | Apparatus for baking in baking fat or oil, e.g. for making doughnuts

|  | A21B 7/00 |
Baking plants