Gas And Liquid Contact Apparatus Patents (Class 261)
Miscellaneous (Class 261/1)
With liquid separations (Class 261/2)
With external supply or removal of heat (Class 261/127)
Indirect interchange or heat between contact fluids (Class 261/158)
Multiple gas (Class 261/16)
Multiple diverse liquids (Class 261/18.1)
Fluid distribution (Class 261/19)
Contact devices (Class 261/75)

Foreign Patent Art Collections

Class-related foreign documents (Class 261/FOR000)

Digests

Auxiliary air inlet carburetors (Class 261/DIG1)
Airplane (Class 261/DIG2)
Air cooling (Class 261/DIG3)
Auto humidifiers (Class 261/DIG4)
Backfire (Class 261/DIG6)
Carbonators (Class 261/DIG7)
Carburetor primers (Class 261/DIG8)
Furnace gas scrubbers (Class 261/DIG9)
Steam heaters and condensers (Class 261/DIG10)
Cooling towers (Class 261/DIG11)
Carburetor venturi (Class 261/DIG12)
Desuperheaters (Class 261/DIG13)
Display stands (Class 261/DIG14)
Duct humidifiers (Class 261/DIG15)
Cream whipping (Class 261/DIG16)
Odorizers (Class 261/DIG17)
Dashpots (Class 261/DIG18)
Degassers (Class 261/DIG19)
Deicers for carburetors (Class 261/DIG20)
Drawing excess fuel from carbureting passage (Class 261/DIG21)
Faucet aerators (Class 261/DIG22)
Fuel feeding valves (Class 261/DIG23)
Fuel feeding valve retaining (Class 261/DIG24)
Fuel spread out into a film (Class 261/DIG25)
Foam (Class 261/DIG26)
Gas circulated in circuit (Class 261/DIG27)
Blood oxygenators (Class 261/DIG28)
Heaters submerged in liquid (Class 261/DIG29)
Tray heaters (Class 261/DIG30)
Heaters (Class 261/DIG31)
Heaters and condensers (Class 261/DIG32)
Heaters, spray (Class 261/DIG33)
Automatic humidity regulation (Class 261/DIG34)
Air line lubricators (Class 261/DIG35)
Carburetor manifolds (Class 261/DIG36)
Modern pumps diaphragm (Class 261/DIG37)
Needle valves (Class 261/DIG38)
Liquid feeding nozzles (Class 261/DIG39)
Oil filter for fuel entering nozzles or float chamber (Class 261/DIG40)
Pad retaining means in humidifiers and air conditioners (Class 261/DIG41)
Ozonizers (Class 261/DIG42)
Air coolers (Class 261/DIG43)
Overflow trough (Class 261/DIG44)
Processes carburetors (Class 261/DIG45)
Residue prevention in humidifiers and air conditioners (Class 261/DIG46)
Swing diffusers (Class 261/DIG47)
Sonic vibrators (Class 261/DIG48)
Suction operated feed valve (Class 261/DIG49)
Surge prevention in carburetors (Class 261/DIG50)
Carburetors with supercharging blowers (Class 261/DIG51)
Carburetor with valves (Class 261/DIG52)
Valve actuation (Class 261/DIG53)
Venturi scrubbers (Class 261/DIG54)
Reatomizers (Class 261/DIG55)
Variable venturi (Class 261/DIG56)
Interchangeable chore tube (Class 261/DIG57)
Choke tube having plurality of leaves (Class 261/DIG58)
Choke tube leaves flexible (Class 261/DIG59)
Duplex barrels (Class 261/DIG60)
Longitudinally reciprocating choke tube (along air passage) (Class 261/DIG61)
Longitudinally reciprocating choke tube having movable parts (Class 261/DIG62)
Longitudinally reciprocating choke tube, throttle-operated (Class 261/DIG63)
Longitudinally reciprocating choke tube, suction-operated (Class 261/DIG64)
Vaporizers (Class 261/DIG65)
Water injection to prevent detonation (Class 261/DIG66)
Carburetors with vented bowl (Class 261/DIG67)
Diaphragm-controlled inlet valve (Class 261/DIG68)
Fluid amplifiers in carburetors (Class 261/DIG69)
Sewage aerators; diffusers (Class 261/DIG70)
Sewage aerators; rotating (Class 261/DIG71)
Packing elements (Class 261/DIG72)
Carburetor primers; ticklers (Class 261/DIG73)
Valve actuation; electrical (Class 261/DIG74)
Flowing liquid aspirates gas (Class 261/DIG75)
Steam (Class 261/DIG76)
Plume abatement (Class 261/DIG77)
Sonic flow (Class 261/DIG78)
Cooling ponds (Class 261/DIG79)
Electrical treatment (Class 261/DIG80)
Percolation control (Class 261/DIG81)
Upper end injectors (Class 261/DIG82)
Fuel vapor generation (Class 261/DIG83)
Tamperproof (Class 261/DIG84)
Droplet catchers (Class 261/DIG85)
Cooling tower ice prevention (Class 261/DIG86)
Cooling tower power generators (Class 261/DIG87)
Aroma dispensers (Class 261/DIG88)