| Patents for A63B 39 - Hollow non-inflatable balls (695) |
|---|
| 01/11/1989 | CN2030493U 桌网球 Table Tennis |
| 01/05/1989 | DE3726782A1 Device for the pneumatic renovation of tennis balls |
| 01/05/1989 | DE3726781A1 Device for the pneumatic renovation of tennis balls |
| 11/09/1988 | EP0289998A2 Tennis ball |
| 09/22/1988 | DE3707466A1 Compressed-air packaging flask for tennis balls |
| 09/21/1988 | EP0282767A2 Manual device for varying the pressure in valveless balls |
| 08/25/1988 | DE3804104A1 Tennisball Tennis Ball |
| 08/23/1988 | US4765853 Method of making a pressurized ball |
| 07/27/1988 | CN87107671A Improved takraw ball |
| 04/26/1988 | US4739989 Tennis ball |
| 03/31/1988 | DE3632989A1 Method and associated devices for cooling and regenerating tennis balls, combined with appropriate input and output devices |
| 02/24/1988 | CN87206051U Apparatus for golf game |
| 11/05/1987 | DE3630047A1 Sealing cap for tennis ball containers |
| 06/11/1987 | DE3705070A1 Sealing and pressure-generation method for tennis balls |
| 05/12/1987 | US4664376 Line fault detector |
| 04/28/1987 | US4660834 Vinyl polymer wall |
| 04/16/1987 | DE3536430A1 Container for storing tennis balls |
| 04/02/1987 | DE3533640A1 Tennis ball |
| 12/10/1986 | EP0095467B1 Line fault detector |
| 10/14/1986 | US4616828 Tennis ball |
| 07/30/1986 | CN85202217U Smoke generator |
| 06/03/1986 | US4592550 Tennis balls and core therefor |
| 04/08/1986 | US4580781 Pressureless tennis ball |
| 02/18/1986 | US4570931 Basketball |
| 02/12/1986 | EP0170782A1 Large-diameter tennis ball |
| 02/04/1986 | US4568081 Inflation needle lubricating plug insert-type valve assembly |
| 11/05/1985 | CA1196353A1 Tennis ball |
| 10/09/1985 | EP0157083A2 Triangular pebble design for basketballs |
| 06/05/1985 | EP0143390A2 Tennis balls and core therefor |
| 03/12/1985 | US4504345 Tennis-balls |
| 10/29/1984 | EP0095467A4 Line fault detector. |
| 03/27/1984 | US4439471 Tennis ball with fabric covering |
| 01/31/1984 | US4428478 Self-limiting pump |
| 12/07/1983 | EP0095467A1 Line fault detector. |
| 06/09/1983 | WO1983001904A1 Line fault detector |
| 03/29/1983 | CA1143528A1 Process for rotational molding utilizing eva and products produced therefrom |
| 02/08/1983 | US4372095 Tennis ball pressurizer |
| 11/09/1982 | US4358111 Pressurized, non-refillable recreation ball inflated with sulfur hexafluoride |
| 10/13/1982 | EP0062262A1 Pressurized non-refillable recreation ball filled with sulfur hexafluoride |
| 10/12/1982 | CA1133532A1 Method of covering tennis balls |
| 06/08/1982 | CA1125153A1 Method of covering tennis balls |
| 05/04/1982 | US4327912 Tennis ball |
| 04/21/1982 | EP0050029A1 Improvements in and relating to playballs |
| 02/02/1982 | US4313289 Apparatus for manufacturing gas-filled balls with precision |
| 12/22/1981 | US4306719 Cores for tennis balls |
| 12/15/1981 | US4305583 Play ball |
| 11/17/1981 | US4300767 Inflated game ball having long lasting pressure retention with decreased noise |
| 08/25/1981 | CA1107783A1 Inflated game ball having long lasting pressure retention with decreased noise |
| 04/07/1981 | CA1098925A1 Pressurized game ball (e.g. tennis ball) having long lasting pressure retention |
| 02/17/1981 | US4251073 Apparatus and method for manufacturing gas-filled balls with precision |
| 02/10/1981 | US4249730 Tennis ball comprising a hollow sphere of a rubber containing filler |
| 02/03/1981 | US4248658 Apparatus for the manufacture of balls |
| 02/03/1981 | US4248424 Aerial projectile |
| 02/03/1981 | US4248275 Method for obtaining uniformly mixed gases in a ball mold |
| 01/28/1981 | EP0022961A1 Play ball |
| 12/23/1980 | US4241118 Adhering the textile covering to the core with a hot melt adhesive irradiated with microwaves or radio frequency waves |
| 12/23/1980 | US4240630 Game ball check valve |
| 09/23/1980 | CA1086349A1 Tennis ball with flocked fibers |
| 09/16/1980 | US4222806 Hot melt adhesives |
| 08/06/1980 | EP0014040A1 Tennis balls and methods of covering tennis balls |
| 07/23/1980 | EP0013503A1 Method of covering tennis balls and tennis balls made by this method |
| 03/04/1980 | CA1072925A1 Method and apparatus for mixing gases in a closed chamber |
| 01/01/1980 | US4180960 Pressurizing and controlling fluid flow to a sealed article |
| 11/13/1979 | CA1066242A1 Technique for pressurizing a sealed article |
| 09/18/1979 | CA1062739A1 Hollow, perforated, round ball |
| 09/04/1979 | US4166484 Method and apparatus for mixing gases in a closed chamber |
| 08/28/1979 | US4165770 Apparatus to rejuvenate tennis balls |
| 07/17/1979 | US4161247 Method of and means for preserving tennis balls or the like |
| 05/22/1979 | CA1055062A1 Tennis ball |
| 05/15/1979 | US4154095 Apparatus for indicating the deflection characteristic of a hollow ball having an internal pressure |
| 04/24/1979 | US4151029 Method of making tennis balls |
| 03/20/1979 | US4145045 Natural rubber, polybutadiene, copolymer of ethylene and an acrylic acid |
| 11/28/1978 | CA1043306A1 Liquid sealant dispenser |
| 11/07/1978 | US4124117 Apparatus for repressuring tennis and similar play balls |
| 09/19/1978 | US4114350 Method and apparatus for adjusting the resilience of a hollow ball having an internal pressure |
| 08/22/1978 | CA1036988A1 Method of and means for preserving tennis balls and the like |
| 08/15/1978 | US4106769 Non-rebounding article |
| 07/18/1978 | US4101029 Tennis ball rejuvenator and maintainer |
| 07/04/1978 | US4098504 Inflation gas of air and sulfur hexafluoride |
| 07/04/1978 | US4098048 Tennis ball pump |
| 05/02/1978 | US4086743 Tennis ball revitalizer |
| 02/14/1978 | US4073120 Apparatus for repressurizing tennis balls |
| 01/31/1978 | US4071242 Electrically conductive tennis ball |
| 09/20/1977 | US4049160 Flexible squeeze dispenser for liquid sealant |
| 09/06/1977 | US4046491 Tennis ball preserver |
| 07/12/1977 | USRE29303 Tennis ball including needle punched fabric cover |
| 06/28/1977 | US4031688 Technique for pressurizing a sealed article |
| 05/10/1977 | US4022469 Tennis ball |
| 05/03/1977 | US4020948 Tennis ball storage container |
| 04/26/1977 | US4019629 Pressurized tennis ball container |
| 03/15/1977 | US4012041 Game ball repressurizing method |
| 02/08/1977 | US4006908 Practice golf ball |
| 01/18/1977 | US4003574 Game ball |
| 08/17/1976 | US3974622 Apparatus and method for repressurizing hollow valveless articles |
| 01/20/1976 | US3932977 Ball inflating apparatus and method |