Electric heating

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219

SECTION I - CLASS DEFINITION

This class includes all those devices commonly known as electric heaters, electric-heating metal working apparatus, electrically-heated tools and instruments. Processes are classified with the apparatus unless otherwise indicated by the subclass title.

This is the generic class for electric heating devices, per se. Devices and systems equipped with electric heating means in which the electric heating means is combined with or includes specific other art structure whereby the heated material is withdrawn, stored or otherwise utilized will be classified in the appropriate other art class to which it pertains and cross referenced back to Class 219.



 
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Subclass
Title
69.12
Wire cutting
674 Patents
121.48
Plasma torch structure
502 Patents
121.6
Using laser
638 Patents
121.64
Methods
826 Patents
121.67
Cutting
602 Patents
121.69
Methods
951 Patents
121.85
Method
844 Patents
494
Thermally responsive
703 Patents
600
INDUCTIVE HEATING
12 Patents
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601
With diverse-type heating
64 Patents
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602
Metal working
41 Patents
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603
Bonding
88 Patents
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604
Container sealing
42 Patents
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605
Wire (e.g., cable, etc.)
28 Patents
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606
Ring
13 Patents
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607
Tube (i.e., pipe)
22 Patents
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608
With electrical control (e.g., speed, temperature, gaging thickness, etc.)
20 Patents
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609
Layering (e.g., coating, lining, etc.)
24 Patents
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610
With preheating or postheating
12 Patents
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611
Plural (e.g., end to end, etc.)
36 Patents
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612
Seam bonding
21 Patents
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613
With impeder
9 Patents
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614
With guiding device
18 Patents
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615
Brazing (e.g., cladding, etc.)
57 Patents
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616
Soldering
40 Patents
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