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| Class 338 | ELECTRICAL RESISTORS |
| Click here for a printable version of this file | |
![[List of Pre Grant Publications for class 338 subclass 1]](../as.gif) | ![[List of Patents for class 338 subclass 1]](../ps.gif) | 1 | COHERER TYPE |
| | 2 | STRAIN GAUGE TYPE |
| | 3 |  With temperature compensation |
| | 4 | Fluid- or gas pressure-actuated |
| | 5 | Dynamometer type |
| | 6 | Extensometer type |
| | 7 | RESISTANCE VALUE TEMPERATURE-COMPENSATED |
| | 11 | REFLECTOR DIRECTS HEAT ON ELEMENT |
| | 12 | MOVABLE MAGNET ACTUATES RESISTOR THROUGH HOUSING OR PARTITION |
| | 13 | RESISTANCE VALUE RESPONSIVE TO A CONDITION |
| | 14 | Plural conditions |
| | 15 | Photoconductive (e.g., light sensitive) |
| | 16 |  With vibration control |
| | 17 | Plural resistance elements (e.g., mosaic) |
| | 18 | Infrared radiation |
| | 19 | With transparent housing |
| | 20 | Current and/or voltage (e.g., ballast resistor) |
| | 25 | Ambient temperature |
| | 26 | Cable or tape type (e.g., fire-detecting cable) |
| | 27 | Liquid contact or element |
| | 28 | Probe type |
| | 31 | Mechanically adjustable or variable |
| | 32R | Magnetic field or compass (e.g., Hall effect type) |
| | 33 | Float actuator |
| | 34 | Gas, vapor, or moisture absorbing or collecting |
| | 36 | Fluid- or gas pressure-actuated |
| | 37 | Vehicle tire inflation |
| | 38 | Liquid resistance element or contact |
| | 39 | Piston |
| | 40 | Bourdon tube |
| | 41 | Bellows or capsule |
| | 42 | Diaphragm |
| | 43 | Gravity stabilized or inertia actuator |
| | 47 | Force-actuated |
| | 48 | PLURAL SEPARATE DIVERSE RESISTORS |
| | 49 | SHUNT TYPE |
| | 50 | MOUNTED ON WHEELS OR VEHICLE |
| | 51 | WITH HEAT DISSIPATING PROJECTIONS (E.G., VANES) |
| | 53 | WITH COOLING GAS OR LIQUID CIRCULATION |
| | 54 | Element granular, powdered, or stacked between terminals |
| | 55 | With cooling liquid circulation |
| | 57 | Vented or ventilating casing or housing |
| | 58 | Ventilated helical or zigzag element |
| | 59 | WITH HEAT-STORING |
| | 60 | WITH CAPACITY-REDUCING |
| | 61 | WITH INDUCTANCE-REDUCING |
| | 64 | WITH ELECTRICAL SHIELD |
| | 66 | IGNITION INTERFERENCE SUPPRESSOR TYPE |
| | 67 | WITH DIVERSE NONELECTRICAL DEVICE (E.G., MECHANICAL OR CHEMICAL) |
| | 68 | MECHANICALLY VARIABLE (E.G., RHEOSTAT) |
| | 69 | Musical instrument playing key actuated |
| | 70 | In or on lamp socket |
| | 71 | Resistor surfaces pressed together (e.g., compressible type) |
| | 72 | Resistor with intervening connector between contact and element (e.g., taps) |
| | 73 | Resistor with contact angularly slidable on element |
| | 74 | Resistor with contact rectilinearly slidable on element |
| | 75 | With resistor cleaner |
| | 76 | Interchangeable resistors of different resistance value |
| | 77 | Plug boxes |
| | 78 | With current reversing (e.g., reversing rheostat) |
| | 79 | With element winding and/or unwinding |
| | 80 | Liquid resistance element |
| | 81 | Electrode separable from liquid element for switching |
| | 82 | Adjustable insulating barrier between electrodes |
| | 83 | Variable electrode separation |
| | 86 | Level of liquid element adjustable on electrodes (e.g., electrodes move up and down in element) |
| | 87 | Contact adjustably inserted into resistance element (e.g., penetrating type) |
| | 89 | Mathematical function (e.g., sine-cosine potentiometer) |
| | 92 | Resistance element adjustably short-circuited |
| | 93 | Compressible spring type |
| | 94 | Liquid contact |
| | 95 | With intervening structure between element and short-circuiting means (e.g., taps) |
| | 96 | Spring contact strip progressively pressed along element |
| | 97 | Unitary movable contact electrically bridges resistance portions |
| | 98 | With motion or vibration damping means (e.g., dashpots) |
| | 99 | Surfaces pressed together (e.g., compressible type) |
| | 100 | Granular |
| | 101 | Pile type |
| | 102 |  With contactor moving along pile |
| | 103 | With electromagnetic operator (e.g., electric motor) |
| | 104 |  Force applied at both ends of pile |
| | 105 | With diaphragm-type biasing spring |
| | 106 | With initial pressure adjustment |
| | 107 | With electromagnetic holder |
| | 108 | Pedal- or treadle-operated |
| | 109 | With initial pressure adjustment |
| | 110 | With switch actuated by resistor actuator |
| | 111 | With intervening conducting structure |
| | 112 | Contact surface area of piles variable |
| | 113 | With resilient pressure-applying linkage |
| | 114 | Deformable |
| | 115 | Element in piled or stacked layers |
| | 116 | With electromagnetic operator (e.g., electric motor) |
| | 117 | Slidable coextensive helical and linear contacts |
| | 118 | Movable contact electrically adjustable over length of resistance element |