Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Reexamination Certificate
2007-10-09
2011-10-25
Gravini, Stephen M. (Department: 3743)
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
C034S595000, C034S606000, C068S020000, C068S01800R, C208S176000, C219S480000, C318S060000, C053S440000, C053S563000, C398S018000, C398S086000
Reexamination Certificate
active
08042284
ABSTRACT:
A heating system and a method of controlling the heating system are provided. When a heating unit and a switch are turned on and off repeatedly by the predetermined number of times or more, only some of heaters of the heating unit are turned on, thereby increasing service life of the heating unit and the switch.
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Go Seog Ho
Yoo Hea Kyung
Birch & Stewart Kolasch & Birch, LLP
Gravini Stephen M.
LG Electronics Inc.
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