Houses, Kilns, And Containers Patents (Class 34/201)
- Recirculation of treating gas or vapor (Class 34/219)
- Tortuous gas or vapor path (Class 34/226)
- Gas or vapor flow toward or from treated material entrance or exit (Class 34/227)
- Movable gas or vapor distributor (Class 34/229)
- Plural gas or vapor forcing means (Class 34/230)
- Deflecting baffle in treating chamber (Class 34/231)
- Plural gas or vapor inlets and/or outlets (Class 34/232)
- Caused by heater only (Class 34/234)