| Patents for A63C 19 - Design or layout of playing courts, rinks, bowling greens or areas for water-skiing; Covers therefor (2,977) |
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| 02/08/1989 | EP0302556A1 Seesaw ski-track |
| 02/08/1989 | EP0302087A1 Automatic apparatus for covering fields, in particular sports pitches. |
| 02/01/1989 | EP0302037A2 Vehicle for continuous application of a stripe to a surface |
| 01/25/1989 | CN2031297U Convinient cart for making-out court |
| 01/24/1989 | USRE32842 Arbitration of tennis by change of colors |
| 01/17/1989 | US4798389 Apparatus for playing indoor baseball indoor soft ball or indoor tee-ball |
| 12/27/1988 | US4793142 Method for making artificial snow |
| 12/20/1988 | US4792260 Tunnel-wave generator |
| 12/20/1988 | CA1246882A1 Ice skating rink |
| 12/13/1988 | US4790531 Indoor ski slope and apparatus for making snow thereon |
| 12/13/1988 | EP0232273A4 Method for making artificial snow. |
| 12/07/1988 | EP0293831A1 Wave making apparatus |
| 11/30/1988 | EP0292605A2 Wave pool |
| 11/17/1988 | DE3714210A1 Floor covering for rhythmic sports gymnastics |
| 11/08/1988 | CA1244276A1 Impact-absorbing safety hockey fence |
| 11/03/1988 | DE3726871A1 Hollow structural element |
| 11/03/1988 | DE3712618A1 Fence and fastening strap intended therefor |
| 10/05/1988 | EP0270619A4 Ball game. |
| 10/04/1988 | US4774777 Method of collecting, preserving and repositioning snow on a ski slope |
| 10/04/1988 | US4774731 Wave pool |
| 09/22/1988 | WO1988007117A1 Marker post system |
| 09/22/1988 | WO1988006971A1 Sporting surfaces |
| 09/22/1988 | DE3707484A1 Process for the production of and application of non-injurious floor coverings for indoor football |
| 09/21/1988 | EP0283172A1 Load-bearing article having surface lubricity |
| 09/14/1988 | EP0281806A1 Apparatus for producing artificial wave |
| 08/24/1988 | EP0279570A1 Surfacing a recreational area |
| 08/23/1988 | US4764998 Retractable cover |
| 08/11/1988 | WO1988005678A1 Automatic apparatus for covering fields, in particular sports pitches |
| 08/09/1988 | US4762316 Wave surfing simulation apparatus |
| 07/20/1988 | EP0275058A2 Party game |
| 07/19/1988 | US4758002 Indoor baseball |
| 07/13/1988 | EP0274305A2 Method for covering artificial alpine or nordic ski runs with snow and means for carrying out the method |
| 07/05/1988 | US4755401 Artificial turf with playing field markings |
| 07/05/1988 | CA1238810A1 Manipulating large sections of artificial turf |
| 06/29/1988 | EP0272311A1 Building complex with fitness itinerary |
| 06/16/1988 | WO1988004394A1 Method for covering with snow artificial slopes for downhill or cross-country skiing, and means for implementing such method |
| 06/15/1988 | EP0270619A1 Ball game |
| 05/10/1988 | US4742958 Method for making artificial snow |
| 05/04/1988 | EP0114829B1 Post with spring joint |
| 04/19/1988 | US4738407 Manipulating large sections of artificial turf |
| 04/14/1988 | DE3730696A1 Apparatus for stabilising free-standing, movable roofings for open surface areas |
| 03/10/1988 | DE3630547A1 Tilting element for limit indication poles, especially for tilting slalom poles |
| 03/01/1988 | US4728536 Spreading foam layer |
| 01/26/1988 | CA1231802A1 Artificial turf playing fields |
| 01/21/1988 | DE3721738A1 Roofing for open spaces |
| 01/14/1988 | WO1988000078A1 Building complex with fitness itinerary |
| 01/14/1988 | WO1988000077A1 A game and court |
| 12/29/1987 | US4715598 Basketball game and court |
| 12/17/1987 | WO1987007520A1 Underlay shock pad |
| 12/17/1987 | WO1987007519A1 Ball game |
| 12/01/1987 | CA1229854A1 Unitary shock-absorbing polymeric pad for artificial turf |
| 11/24/1987 | US4708336 Modular construction assembly for wall of court |
| 11/04/1987 | EP0243989A1 Method and device for keeping constant the temperature of an out-door liquid or frozen surface |
| 11/03/1987 | US4703597 Arena floor and flooring element |
| 10/27/1987 | US4702639 Slalom post |
| 10/27/1987 | EP0201485A4 A game and court. |
| 10/26/1987 | EP0229082A4 Retractable cover. |
| 10/14/1987 | EP0240595A1 Slalom gate pole having a bending joint |
| 09/24/1987 | DE3613836A1 Apparatus for protecting a planted pitch in sports facilities |
| 09/23/1987 | EP0238127A2 Wind/heat barrier |
| 09/16/1987 | EP0237121A1 Roof for artificial skating-rinks |
| 09/16/1987 | EP0236983A2 Covering device for tennis courts |
| 09/01/1987 | CA1226313A1 Synthetic turf carpet game playing surface |
| 08/19/1987 | EP0232273A1 Method for making artificial snow. |
| 07/28/1987 | US4682910 Marking system |
| 07/22/1987 | EP0229082A1 Retractable cover. |
| 07/07/1987 | US4678042 Method and apparatus for cutting an athletic field line |
| 06/30/1987 | US4676729 Lightweight roofing module and apparatus and method for manufacturing same |
| 06/19/1987 | DE3544418A1 Method for producing ski poles which do not cause injury and for making markings more easily visible in alpine skiing |
| 05/27/1987 | EP0222843A1 Method for making artificial snow |
| 05/26/1987 | US4667481 Method of and apparatus for emitting light in ice |
| 05/13/1987 | EP0221885A1 Installation for a ball game similar to golf |
| 05/05/1987 | US4662781 Apparatus for creating water sports ramp |
| 04/28/1987 | US4660834 Vinyl polymer wall |
| 04/23/1987 | DE3537650A1 Marking element made of plastic for sports facilities, in particular for football pitches |
| 04/21/1987 | US4659247 Edging element with interlaceable elastic anchoring strip |
| 03/26/1987 | DE3534165A1 Sports hall floor covering |
| 03/24/1987 | CA1219611A1 Backing mat for a ground covering, preferably for a water-permeable artificial grass, as well as a method for its production |
| 03/17/1987 | US4649678 Marker post system |
| 03/03/1987 | CA1218683A1 Sports ground covering |
| 02/10/1987 | US4641780 Spraying apparatus |
| 02/10/1987 | US4641400 Airtight, watertight mechanical seam for joining panels of industrial strength fabrics |
| 02/05/1987 | DE3528017A1 Hopscotch game |
| 02/04/1987 | EP0210285A1 Arena floor covering and element suited for composing the same |
| 02/03/1987 | US4640469 System for rolling and unrolling a ground cover |
| 01/15/1987 | WO1987000228A1 Retractable cover |
| 01/15/1987 | DE3524494A1 Jump for water sports appliances |
| 01/13/1987 | US4636109 Hinged slalom gate |
| 01/10/1987 | CN85102143A Man-made lawn |
| 12/30/1986 | US4632329 Thermal barrier device for winter recreation surfaces |
| 12/18/1986 | WO1986007373A1 Method for making artificial snow |
| 12/17/1986 | EP0204787A1 Integrated leasure installation for ball games |
| 11/20/1986 | EP0201987A1 Means and method of preserving a snow base on a skiing slope |
| 11/20/1986 | EP0201485A1 A game and court |
| 11/12/1986 | CA1213915A Playing court and method of use |
| 09/10/1986 | EP0194174A1 Units for arranging play grounds |
| 08/26/1986 | CA1210416A1 Pool barrier for skating rinks and panel therefor |
| 08/12/1986 | US4605204 Collapsible recreational fence |
| 07/22/1986 | US4601925 Race track cushioning surface |
| 07/15/1986 | CA1207811A1 Hockey game |