Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 5524049 | Personal-servicing communication system A communication system offering specific services to specific persons bears a portable memory device with a record of personal information such as the bearer's identification number, class of service, personal data, etc. In making a call, the bearer of th... | 06/04/1996 |
| 5440625 | Personal-servicing communication system A communication system offering specific services to specific persons bears a portable memory device with a record of personal information such as the bearer's identification number, class of service, personal data, etc. In making a call, the bearer of th... | 08/08/1995 |
| 5153906 | Personal-servicing communication system A communication system offering specific services to specific persons bears a portable memory device with a record of personal information such as the bearer's identification number, class of service, personal data, etc. In making a call, the bearer of th... | 10/06/1992 |
| 4759056 | Personal-servicing communication system A communication system offering specific services to specific persons bears a portable memory device with a record of personal information such as the bearer's identification number, class of service, personal data, etc. In making a call, the bearer of th... | 07/19/1988 |
| 4680785 | Personal-signaling communication system A personal-call communication system wherein a personal identification number is assigned to each telephone user, and an arbitrary person is called by wireless by dialing a corresponding personal calling number. The called person sets an ID-card-type port... | 07/14/1987 |
