Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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| Number | Title | Issue Date |
| 6259899 | System and method for analysis of intermodulation dispersion A system and method for determining dispersion of intermodulation power in a satellite communication system or any other system which can be mathematically modeled as a matrix multiplication followed by an instantaneous nonlinearity and another matrix mul... | 07/10/2001 |
| 4854566 | Orthopedic device The present invention pertains to an orthopedic device for immobilizing an appendage of a patient. The orthopedic device includes a linkage and a first member fixedly secured to the linkage. The first member has a side and an open region defined in the si... | 08/08/1989 |
| 4498052 | Signal detecting circuit A time averaging circuit which increases significantly the signal to noise ratio of a received signal. The output of a multiplier which provides near D.C. signals with the noise is fed to a metal core transformer through an operational amplifier. The seco... | 02/05/1985 |
