retainers hair curler or crimper retainers hair pin retainers heat accumulator for liquid heater retainers heat accumulator type stove retainers heat fireless cooker retainers heat furnace retainers key in lock retainers levees retainers load land vehicle retainers necktie knot retainers orthodontic retainers picture frame cover retainers picture in frame retainers railway car stop retainers receptacle closure retainers receptacle closure bottle and jar retainers receptacle closure tethered retainers receptacle closure tethered dispenser type retainers seal for a joint or juncture dynamic lip retainers seal for a joint or juncture face or mechanical retainers seal for a joint or juncture lip for piston retainers seal for a joint or juncture static general retainers seal for a joint or juncture static pipe conduit or cable retainers shaft or spindle pintle caster retainers shaft or spindle pintle hinge retainers shaft or spindle thill coupling retainers shaft or spindle trace eye end retainers shoe and boot retainers shoe on last retainers strand retainers strand conductor on insulator retainers strand picture suspended retainers umbrella retainers water earth control retainers water wharves retaining wall type retarders airplane retarders camera shutter retarders chute retarders clutch retarders compositions mortar retarders door retarders door closer combined retarders drying processes retarders electric switches and circuits electromagnetic latch trip retarders electric switches and circuits switch with retarders electric switches and circuits electromagnetic switch with retarders electric switches and circuits electromagnets with retarders electric switches and circuits railway car actuated switch retarders electric switches and circuits tensioner retarders endless web feeding