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 |
| 4281401 | Semiconductor read/write memory array having high speed serial shift register access A semiconductor memory device of the MOS/LSI type using an array of dynamic one-transistor cells has a high speed serial input/output system. A serial shift register having a number of stages equal to the number of columns in the memory cell array is spli... | 07/28/1981 |
| 4281402 | Marine cable decoupler A decoupling apparatus for isolating a towed marine streamer from noise transmitted from the tow vessel. The decoupling device comprises a fluid spring positioned in the tow cable with changes in the spring constant being minimized by controlling the flui... | 07/28/1981 |
| 4281403 | Seismic data recording method and apparatus A decentralized seismic data recording system includes a central station and a plurality of remote seismic recording units that are incommunicado with the central station during a normal recording operation. A master clock is provided in the central stati... | 07/28/1981 |
| 4281404 | Depth finding apparatus A hand held, self-contained depth finding device is immersible into water for transmitting and receiving sonic impulses in the direction the device is aimed. The device includes a hand grip carrying a battery cartridge and an external trigger for operatin... | 07/28/1981 |
| 4281405 | Reduction of energy consumption of electronic timepiece Reduces the consumption of an electronic time piece equipped with a motor 4 driving a display unit 5. A quartz oscillator 1 feeds a supply circuit 3 through a frequency divider 2. The supply circuit 3 of the motor and its control circuit 9 periodically de... | 07/28/1981 |
| 4281406 | Water-proof case for digital electronic timepieces The invention relates to a thin water-proof timepiece case designed for digital electronic timepieces which employ panel-type display device such as liquid crystal display device. A glass cover, a panel cover which conceals the periphery of the display pa... | 07/28/1981 |
| 4281407 | Surface acoustic wave pickup and recording device A surface acoustic wave (SAW) pickup and record stylus is constructed from an elongated substrate which supports the propagation of SAW. The substrate is tapered to a tip at one end and a fan-shaped interdigital electrode structure having curved fingers i... | 07/28/1981 |
| 4281408 | Digital signal processing arrangement for controlling the level of a frequency-division multiplex signal Level control arrangement for frequency-division multiplex signals, comprising an amplifying device having a variable gain factor, a circuit for transposing the frequency of the multiplex signal at the output of said arrangement in order to bring the freq... | 07/28/1981 |
| 4281409 | Method and apparatus for multiplex binary data communication In electromagnetic communication different data streams share a common communication medium by being multiplexed. Each individual data stream employs its own unique modulation waveform set. A receiver for a given data stream comprises correlators for the ... | 07/28/1981 |
| 4281410 | Circuit arrangement for telecommunications especially telephone installations that switch through digitally by time division A circuit arrangement for telecommunications, in particular telephone exchange installations that switch through digitally by time division, having a special coupling network for switching audio-signals to terminal units which, besides the connection netw... | 07/28/1981 |
| 4281411 | High speed digital communication receiver An improved high speed digital communications diversity receiver using a forward adaptive transversal filter equalizer, having a plurality of weighting sections in each diversity channel to provide a combined weighting signal, wherein the required complex... | 07/28/1981 |
| 4281412 | Method of and apparatus for transmitting and recovering offset QPSK modulated data Bit timing references are derived at a receiver for a carrier modulated by OQPSK. A carrier is transmitted with a constant reference phase modulation during a first interval. During a subsequent, second interval the carrier is transmitted with rotational ... | 07/28/1981 |
| 4281413 | Multichannel radio telephone system Phantom signals resulting from intermodulation between a busy channel and an idle channel with idle tone cause scanning radio stations to lock on a phantom idle channel and miss communications. Locking on a phantom idle channel is prevented by transmittin... | 07/28/1981 |
| 4281414 | Receiving channel number indication system for television receiver An indication system for a television receiver displays a receiving channel number directly from a local oscillation signal of the turner and a signal showing the receiving band associated with the operation of the tuner. An initial value signal is genera... | 07/28/1981 |
| 4281415 | Digital tuner A variable rate tuner is one in which the rate of change of tuned frequency with respect to tuning shaft rotation varies automatically as a function of the shaft rotation speed. In this tuner the circuitry is completely digital, including a shaft encoder ... | 07/28/1981 |
| 4281416 | Light source system in an optical transmission repeater An optical transmission repeater with high operational reliability comprises of a plurality of light sources for transmitting an optical energy into an optical fiber, an optical connector for introducing the optical energy from each of said light sources ... | 07/28/1981 |
