Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 5485168 | Multiband satellite communication antenna system with retractable subreflector A multiband satellite communication antenna system includes a primary reflector and one or more movable subreflectors. A system with one subreflector operates at a first band when the subreflector is in a deployed position and reflects energy between a fi... | 01/16/1996 |
| 4837576 | Antenna tracking system An antenna tracking system tracks a primary antenna to follow a moving signal source, such as a communication satellite. A secondary antenna has a greater beam width than the primary antenna and receives the same tracking signal from the satellite. The pr... | 06/06/1989 |
| 4290071 | Multi-band directional antenna A multi-band multi-element directional antenna array having a driven element and at least one parasitic element with a network at the center of each element interconnecting element opposite side radiators. While some of these would be a driven element and... | 09/15/1981 |
| 4145693 | Three band monopole antenna A three band monopole antenna with such length as to be of greater electrical length than a quarter wavelength of the two highest frequency bands and shorter than a quarter wavelength of the lowest frequency band. The antenna system includes a matching ne... | 03/20/1979 |
| 4063250 | Beam and null switch step steerable antenna system An antenna combiner 2n antenna element system with switchable variable delay line length broadband beam and null steering through 360° in azimuth.... | 12/13/1977 |
