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Class Information
Number: 261/121
Name: Gas and liquid contact apparatus >
Description:










Sub-classes under this class:

Class Number Class Name Patents
261/1 Miscellaneous 41
261/127 With external supply or removal of heat 45
261/158 Indirect interchange or heat between contact fluids 27
261/16 Multiple gas 54
261/18.1 Multiple diverse liquids 59
261/19 Fluid distribution 38
261/2 With liquid separations 13
261/75 Contact devices 60
261/DIG.1 Auxiliary air inlet carburetors 45
261/DIG.10 Steam heaters and condensers 50
261/DIG.11 Cooling towers 384
261/DIG.12 Carburetor venturi 19
261/DIG.13 Desuperheaters 32
261/DIG.14 Display stands 10
261/DIG.15 Duct humidifiers 77
261/DIG.16 Cream whipping 38
261/DIG.17 Odorizers 68
261/DIG.18 Dashpots 20
261/DIG.19 Degassers 86
261/DIG.2 Airplane 18
261/DIG.20 Deicers for carburetors 16
261/DIG.21 Drawing excess fuel from carbureting passage 14
261/DIG.22 Faucet aerators 8
261/DIG.23 Fuel feeding valves 5
261/DIG.24 Fuel feeding valve retaining 1
261/DIG.25 Fuel spread out into a film 3
261/DIG.26 Foam 200
261/DIG.27 Gas circulated in circuit 31
261/DIG.28 Blood oxygenators 137
261/DIG.29 Heaters submerged in liquid 4
261/DIG.3 Air cooling 54
261/DIG.30 Tray heaters 0
261/DIG.31 Heaters 2
261/DIG.32 Heaters and condensers 10
261/DIG.33 Heaters, spray 0
261/DIG.34 Automatic humidity regulation 32
261/DIG.35 Air line lubricators 0
261/DIG.36 Carburetor manifolds 2
261/DIG.37 Modern pumps diaphragm 2
261/DIG.38 Needle valves 119
261/DIG.39 Liquid feeding nozzles 126
261/DIG.4 Auto humidifiers 42
261/DIG.40 Oil filter for fuel entering nozzles or float chamber 1
261/DIG.41 Pad retaining means in humidifiers and air conditioners 48
261/DIG.42 Ozonizers 117
261/DIG.43 Air coolers 30
261/DIG.44 Overflow trough 25
261/DIG.45 Processes carburetors 1
261/DIG.46 Residue prevention in humidifiers and air conditioners 97
261/DIG.47 Swing diffusers 24
261/DIG.48 Sonic vibrators 169
261/DIG.49 Suction operated feed valve 3
261/DIG.50 Surge prevention in carburetors 28
261/DIG.51 Carburetors with supercharging blowers 18
261/DIG.52 Carburetor with valves 2
261/DIG.53 Valve actuation 0
261/DIG.54 Venturi scrubbers 164
261/DIG.55 Reatomizers 50
261/DIG.56 Variable venturi 113
261/DIG.57 Interchangeable chore tube 8
261/DIG.58 Choke tube having plurality of leaves 6
261/DIG.59 Choke tube leaves flexible 3
261/DIG.6 Backfire 10
261/DIG.60 Duplex barrels 2
261/DIG.61 Longitudinally reciprocating choke tube (along air passage) 1
261/DIG.62 Longitudinally reciprocating choke tube having movable parts 0
261/DIG.63 Longitudinally reciprocating choke tube, throttle-operated 5
261/DIG.64 Longitudinally reciprocating choke tube, suction-operated 4
261/DIG.65 Vaporizers 455
261/DIG.66 Water injection to prevent detonation 6
261/DIG.67 Carburetors with vented bowl 76
261/DIG.68 Diaphragm-controlled inlet valve 125
261/DIG.69 Fluid amplifiers in carburetors 9
261/DIG.7 Carbonators 311
261/DIG.70 Sewage aerators; diffusers 55
261/DIG.71 Sewage aerators; rotating 17
261/DIG.72 Packing elements 302
261/DIG.73 Carburetor primers; ticklers 3
261/DIG.74 Valve actuation; electrical 170
261/DIG.75 Flowing liquid aspirates gas 450
261/DIG.76 Steam 113
261/DIG.77 Plume abatement 58
261/DIG.78 Sonic flow 82
261/DIG.79 Cooling ponds 15
261/DIG.8 Carburetor primers 102
261/DIG.80 Electrical treatment 27
261/DIG.81 Percolation control 37
261/DIG.82 Upper end injectors 46
261/DIG.83 Fuel vapor generation 45
261/DIG.84 Tamperproof 61
261/DIG.85 Droplet catchers 21
261/DIG.86 Cooling tower ice prevention 4
261/DIG.87 Cooling tower power generators 11
261/DIG.88 Aroma dispensers 280
261/DIG.9 Furnace gas scrubbers 122


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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