| Patents for E01H 1 - Removing undesirable matter from roads or like surfaces, with or without moistening of the surface (8,945) | 
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| 01/09/1990 | CA1264213A1 Snow-removing machine | 
| 12/27/1989 | CN1038320A Street sweeper machine with trash pick-up and transport capabilities | 
| 12/20/1989 | EP0347142A1 Road-sweeping vehicle | 
| 12/20/1989 | EP0347067A1 Improvements in road sweeping vehicles | 
| 12/20/1989 | EP0347012A1 Aspirator for liquid and solid materials with the aspirated matter collector composed by connectable segments | 
| 12/14/1989 | DE3918745A1 Device for picking up and removing dog excrement | 
| 12/14/1989 | DE3818645A1 Working machine for removing weeds | 
| 12/12/1989 | US4885817 Air-dust separation system for a pneumatic road-cleaning vehicle | 
| 12/06/1989 | EP0230072B1 Apparatus and method for brushing | 
| 12/06/1989 | CN2048873U Dustless cleaning vehicle | 
| 12/05/1989 | US4884314 Portable blower | 
| 12/05/1989 | US4884313 Street sweeper machine with trash pick-up and transport capabilities | 
| 11/30/1989 | DE3909418A1 Animal excrement container | 
| 11/23/1989 | EP0342504A1 Filtering and collecting device of solid and powder refuse for industrial and civil suction apparatus | 
| 11/16/1989 | DE3912972A1 Device for picking up and carrying away dog excrement and similar soiling matter | 
| 11/14/1989 | US4879820 Apparatus for removing water from the ground | 
| 11/08/1989 | EP0340845A1 Mobile dust-free grit-blasting plant | 
| 11/08/1989 | CN1037002A Mechanical garbage cleaner | 
| 10/31/1989 | US4876784 Method for on-site maintenance of guardrails | 
| 10/25/1989 | CN2046509U Combined multi-purpose machine for icebreaking, snow removing and dust cleaning | 
| 10/24/1989 | US4875729 Apparatus for packaging waste material | 
| 10/18/1989 | EP0337048A1 Railway machine for vacuum cleaning a track superstructure | 
| 10/10/1989 | US4872233 Street sweeper with cool springs supported drag shoe | 
| 10/03/1989 | US4870714 Portable blower/vacuum system | 
| 09/28/1989 | DE3809286A1 Device for the hygienic removal of dog excrement | 
| 09/27/1989 | EP0333849A1 Washing device mounted on a motor vehicle and comprising a rotary washing arm which delivers jets of pressurized hot water for cleaning various surfaces | 
| 09/26/1989 | US4868948 Vacuum refuse collector | 
| 09/21/1989 | WO1989008744A1 Refuse collector | 
| 09/19/1989 | US4866862 Auxiliary road wiper blade | 
| 09/19/1989 | CA1259460A1 Floor cleaning machine | 
| 09/12/1989 | US4865371 Apparatus for disposing of animal excrement | 
| 09/06/1989 | EP0331432A2 A suction cleaner | 
| 09/05/1989 | US4863108 Animal excrement dissolver | 
| 08/23/1989 | EP0328942A1 Suction cylinder | 
| 08/23/1989 | CN2043250U Power-driven cleaning car | 
| 08/22/1989 | US4858270 Pavement-cleaning vehicle | 
| 08/15/1989 | US4856835 Tool for picking up litter | 
| 08/09/1989 | EP0327483A1 Suction device for an automotive urban sweeper | 
| 08/09/1989 | CN1034599A Street sweeper machine for trash collecting | 
| 08/08/1989 | US4854624 Device for picking up animal feces | 
| 08/01/1989 | CA1257953A1 Floor cleaning machine | 
| 07/27/1989 | WO1989006722A1 Multipurpose device for cleaning and remote treatment of surfaces, articles and objects situated along the edges of roads | 
| 07/26/1989 | EP0219518B1 Street sweeping machine | 
| 07/13/1989 | WO1989006089A1 Disposable animal waste collector | 
| 07/11/1989 | US4845801 Vehicle for cleaning by liquid spraying and suction | 
| 06/29/1989 | WO1989005886A1 Device for collecting refuse, in particular canine excrements | 
| 06/28/1989 | EP0321592A1 Hand-controlled sweeping apparatus | 
| 06/21/1989 | EP0320526A1 Hand-controlled sweeping apparatus | 
| 06/15/1989 | DE3740705A1 Mobile cleaning installation for removing excrement | 
| 06/07/1989 | EP0318854A1 Rotating cylindrical brush for a road maintenance vehicle | 
| 06/06/1989 | US4836594 Apparatus for hygienically collecting feces and method of manufacturing same | 
| 06/06/1989 | US4835811 Brushing and washing machine | 
| 05/31/1989 | EP0318074A1 Device for cleaning runways | 
| 05/24/1989 | CN2038116U Clearing device of street sweeping vehicle | 
| 05/23/1989 | US4831684 Cleaning vehicles | 
| 05/18/1989 | WO1989004400A1 Roller-brush drive | 
| 05/18/1989 | WO1989004135A1 Portable blower | 
| 05/17/1989 | EP0315669A1 Cleaning vehicles. | 
| 05/16/1989 | US4830419 Disposable animal waste collector | 
| 05/09/1989 | US4828690 Hand tool for sifting debris from sand and soil | 
| 05/09/1989 | US4827637 Apparatus for clearing a surface of snow and dirt | 
| 05/09/1989 | US4827559 Vacuum system for pavement grooving machine | 
| 05/02/1989 | US4825495 Leaf loading machine with cooperating shroud and housing | 
| 04/25/1989 | US4823423 Street sweeping apparatus | 
| 04/20/1989 | WO1989003456A1 Washing device mounted on a motor vehicle and comprising a rotary washing arm which delivers jets of pressurized hot water for cleaning various surfaces | 
| 04/18/1989 | US4822431 Concurrently solvent pretreating areas while removing preated areas using abrasion and chemical mixture simultaneously with a single machine | 
| 04/12/1989 | EP0310727A1 Small-sized vehicle for surface cleaning | 
| 04/11/1989 | US4819977 Objectionable waste material retrieval and bagging device | 
| 04/11/1989 | US4819676 Combination sweeping and scrubbing system and method | 
| 04/11/1989 | US4819290 Sweeping machine | 
| 04/05/1989 | EP0310374A2 Apparatus for removing water from the ground | 
| 04/04/1989 | US4817647 Applying absorbent mats and surfactant; flushing with water | 
| 04/04/1989 | US4817235 Pneumatic pavement cleaning apparatus | 
| 03/30/1989 | DE3731249A1 Reversing roller for a self-propelled area clearance apparatus | 
| 03/28/1989 | CA1251608A1 Pickup truck mounted sweeper | 
| 03/22/1989 | EP0307527A1 Apparatus for the surface treatment of elongated structures | 
| 03/14/1989 | US4811442 Sweeping apparatus | 
| 03/07/1989 | US4809390 Pop-open disposable debris collector | 
| 03/07/1989 | US4809380 Leaf loading machine with counterrotating beater and broom | 
| 03/02/1989 | DE3727982A1 Restoring apparatus for surfacings | 
| 02/28/1989 | US4807327 Dirt deflector for cleaning heads | 
| 02/23/1989 | WO1989001546A1 Combined scraping/sweeping machine | 
| 02/07/1989 | US4802983 Hopper loading directly insertable horizontally mounted cylindrical segmented bore pleated filter system for rotary broom sweepers | 
| 02/07/1989 | US4802258 Combination dustpan and guide means for filling trash containers and the like | 
| 02/02/1989 | DE3723509A1 Container | 
| 02/01/1989 | EP0301437A2 Control of torque in floor maintenance tools by drive motor load | 
| 01/25/1989 | EP0300510A1 Method and apparatus for on-site maintenance of guardrails | 
| 01/24/1989 | US4799281 Device for sweeper units | 
| 01/17/1989 | CA1248717A1 Sweeper with fire control | 
| 01/17/1989 | CA1248716A1 Sweeper with speed control for brush and vacuum fan | 
| 01/11/1989 | CN2030622U Dust-removing road cleaning car | 
| 01/10/1989 | US4796808 Truck bumper mountable water sweeper | 
| 01/10/1989 | US4796327 Apparatus for picking up dog excrement | 
| 12/20/1988 | CA1246810A1 Battery powered vacuum trash collector | 
| 12/15/1988 | WO1988009848A1 Cleaning vehicles | 
| 12/15/1988 | DE3717336A1 Implement for weeding the joints between path slabs | 
| 12/07/1988 | CN88203062U Combined cleaning bicycle | 
| 11/29/1988 | US4787923 Pleated media and frame connected to vibrator for resilient isolation from support housing | 
| 11/23/1988 | EP0291844A2 A street sweeper machine with trash pick-up and transport capabilities | 
| 11/23/1988 | EP0291830A1 Waste disposal vehicle |