| 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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| 12/11/1990 | CA1277477C Arena floor and flooring element |
| 11/29/1990 | WO1990014137A1 Portable cushioned floor system |
| 11/08/1990 | DE3914574A1 Marking line for sports fields - consists of white plastics tape with non-slip surface and anchor points |
| 11/07/1990 | CN2065079U Conical mark block for speed skating |
| 11/06/1990 | CA1275814C Method for insulating an ice rink |
| 10/30/1990 | US4966368 Geometric tennis lanes |
| 10/29/1990 | WO1990013340A1 Sports floor with line marking |
| 10/29/1990 | CA2053852A1 Sports floor with line marking |
| 10/16/1990 | US4962935 Apparatus for playing a racquet and ball game in a confined space |
| 09/26/1990 | CN2062641U Dry-powder scriber |
| 09/25/1990 | US4958400 Line cleaning apparatus |
| 09/19/1990 | EP0387466A2 Artificial football and athletics pitch |
| 09/19/1990 | EP0232273B1 Method for making artificial snow |
| 09/19/1990 | CN2062237U Liquid scriber |
| 09/18/1990 | US4957391 Apparatus for setting marker plugs |
| 09/05/1990 | EP0385295A1 Slalom post |
| 09/05/1990 | EP0347438A4 A method and course for playing a golf-like game |
| 09/04/1990 | US4954014 Surfing-wave generators |
| 08/29/1990 | EP0384383A2 Sliding device |
| 08/29/1990 | CN1044909A Artifical sliding trail for skiing |
| 08/22/1990 | CN2060682U Multi-purpose handcart for marking-out in sports ground |
| 08/21/1990 | US4950519 Interconnectable artificial lawn sections |
| 08/20/1990 | CA2010458A1 Sliding device |
| 08/14/1990 | US4948116 Impact-absorbing safety matting system for a children's play mat |
| 08/08/1990 | CN2060080U Multi-purpose boxing ring |
| 07/25/1990 | EP0378725A1 Skate board tracks made from individual modules |
| 07/25/1990 | EP0378636A1 Snow making equipment |
| 07/17/1990 | US4941662 Baseball game |
| 07/10/1990 | US4940184 Spraying apparatus with speed indicating assembly |
| 07/03/1990 | US4938148 Seesaw ski-track |
| 06/28/1990 | WO1990006790A1 Improvements in surfing-wave generators |
| 06/26/1990 | CA1270720A1 Retractable cover |
| 06/20/1990 | EP0373282A1 Process for constructing and keeping up a terrain, particularly a sports ground, and terrain constructed according to this process |
| 05/29/1990 | US4928973 Method and course for playing a golf-like game |
| 05/22/1990 | US4927134 Dasher board system |
| 05/15/1990 | CA1268954A1 Method for making artificial snow |
| 04/25/1990 | EP0365104A2 Squash-court |
| 04/25/1990 | EP0229082B1 Retractable cover |
| 04/10/1990 | US4915383 Base for little league baseball field |
| 04/10/1990 | US4914923 Method of covering artificial alpine- or nordic-skiing tracks with snow and means for implementing the method |
| 04/03/1990 | CA1267316A1 Tennis court resurfacing |
| 03/13/1990 | US4907793 Arrangement allowing varied use of a surface that is provided with a covering of grass or the like |
| 03/07/1990 | EP0356492A1 Slalom gate. |
| 03/06/1990 | US4905970 Dasher board system for athletic playing surfaces |
| 02/27/1990 | US4903465 Mower guard for flexible markers |
| 02/20/1990 | US4902541 Golf range mat |
| 02/20/1990 | US4902540 Modular athletic turf |
| 02/06/1990 | CA1265308A1 Slalom post |
| 01/30/1990 | US4897302 Resilience, durability; polyurethane; acrylic polymer; fiber reinforcement |
| 01/16/1990 | US4893455 Bendable marker and method of marking |
| 12/28/1989 | WO1989012793A1 Snow making equipment |
| 12/28/1989 | WO1989012484A1 A temporary line marking method and apparatus |
| 12/27/1989 | EP0347438A1 A method and course for playing a golf-like game |
| 12/21/1989 | DE3817794A1 Systems for changing hall floors |
| 12/20/1989 | CN1006143B Man-made lawn |
| 12/14/1989 | WO1989011893A1 An arrangement in a flexible sliding mat, if desired for use with an exerciser |
| 11/28/1989 | US4883267 Dasher board system |
| 11/14/1989 | US4880243 Portable playing court demarcation apparatus and method for fabrication thereof |
| 11/08/1989 | EP0341064A2 Bendable marker and method of marking |
| 10/11/1989 | EP0336131A2 Fence element and fence produced therewith |
| 10/04/1989 | EP0335110A2 Installation for different uses of an area covered by grass or the like surface |
| 10/03/1989 | US4871279 Slalom post |
| 09/26/1989 | CA1260976A1 Portable grid for a game |
| 09/05/1989 | US4862823 Bendable marker and method of marking |
| 08/29/1989 | US4860516 Portable cushioned floor system |
| 08/24/1989 | WO1989007477A1 Slalom gate |
| 08/01/1989 | US4852889 Installation for ball game with return panel |
| 07/13/1989 | WO1989006151A1 Surface decorative member of peripheral walls of tennis court |
| 07/11/1989 | US4846457 Impact-absorbing safety matting system for a sports game surface |
| 06/27/1989 | EP0305454A4 Sporting surfaces. |
| 06/22/1989 | DE3741461A1 Ball-catching fence |
| 06/01/1989 | WO1989004703A1 Generating a surface wave in a rink for roller skating, skate-board riding and the like |
| 05/30/1989 | US4834392 Court game and apparatus therefore |
| 05/24/1989 | DE3737269A1 Sporting track |
| 05/23/1989 | US4832331 Athletic field marker |
| 05/16/1989 | CA1254241A1 Edging element with interlaceable elastic anchoring strip |
| 05/11/1989 | DE3736248A1 Inflatable obstacle bar |
| 05/05/1989 | WO1989003865A1 Method of making artificial snow |
| 04/24/1989 | EP0304418A4 Marker post system. |
| 04/20/1989 | DE3733957A1 Apparatus for blocking off a playing area in a hall for ball sports, in particular tennis, outside given playing times |
| 04/20/1989 | DE3733911A1 Marking device for applying or renewing marking lines on traffic surfaces, sports grounds or the like |
| 04/20/1989 | DE3733187A1 Automatic rainproof roof |
| 04/06/1989 | WO1989002771A1 Sports apparatus |
| 04/05/1989 | CN1032110A 紧凑型高尔夫球场 Compact Golf Course |
| 03/29/1989 | EP0308833A1 Compact golf course |
| 03/28/1989 | US4815301 Portable ice skating rink |
| 03/23/1989 | WO1989002298A1 A method and course for playing a golf-like game |
| 03/16/1989 | DE3729163A1 Traeger fuer einen flaechenelastischen sporthallenboden Traeger for a flaechenelastischen gym floor |
| 03/09/1989 | WO1989002017A1 Support for a resilient mounted floor for indoor stadia |
| 03/09/1989 | WO1989001810A1 A marking system for a games area |
| 03/08/1989 | EP0305675A1 Slalom pole |
| 03/08/1989 | EP0305454A1 Sporting surfaces. |
| 03/07/1989 | US4810560 Batting box |
| 03/01/1989 | EP0304418A1 Marker post system. |
| 02/23/1989 | DE3803150A1 Slalom pole |
| 02/22/1989 | EP0304008A1 Slide element for winter sport rinks and slopes, and process for producing it |
| 02/22/1989 | EP0303958A1 Process for lubricating an artificial ski slope, and artificial ski slope therefor |
| 02/21/1989 | US4806048 Apparatus for producing artificial wave |
| 02/21/1989 | US4806046 Self-uprighting delineator post |
| 02/15/1989 | EP0303544A1 Ball game appliance with rebound panels |