Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 4910773 | Method of dispatching secret keys to security modules and user cards in a data processing network The present invention relates to a method for dispatching at least one predetermined secret key, in order to make the implementation of a provision of service secure, characterized in that it comprises transmitting a predetermined implementation key in en... | 03/20/1990 |
| 4849929 | Method of recording in a disk memory and disk memory system A method of recording numerical information in a plurality of disk units, in which the bits of each word of numerical information are transmitted simultaneously, each bit being allocated to a unit associated with the weight of that bit in that word, and a... | 07/18/1989 |
| 4683553 | Method and device for protecting software delivered to a user by a supplier The invention relates to a method and a device for protecting software delivered to a user by a supplier. The method amounts to rendering the programs non-executable in the state in which they have been delivered to the users. With each program (Pi | 07/28/1987 |
| 4666789 | Magneto-optic recording medium A multilayer magnetic recording medium including at least one magnetic layer (CMOI) formed of an alloy including one of the group of heavy rare earths and a metal of the group of the first series of transition metals surrounded by at least two dielectric ... | 05/19/1987 |
| 4657416 | Non-impact printing apparatus The invention relates to a printing apparatus of the type which transfers an image without impact. This apparatus includes a flexible recording tape (20), a printing block (28) which is displaced along the tape so as to record latent images onto it and de... | 04/14/1987 |
| 4646108 | Method for magnetographic printing, and magnetographic printing machine The invention relates to a printing method and to a magnetic printing machine, which makes it possible to obtain images in at least two colors on a printing medium. A magnetic recording device (13) is arranged such that when it is excited by pulses it for... | 02/24/1987 |
| 4633450 | Optical focusing apparatus for the reading of a data medium moving past it Optical apparatus (DISFOCI1 to DISFOCI4) for focusing a beam of light for reading of a data medium moving past it, comprising, a main body (CPLI1 to CPLI4) disposed to fly above the data medium and at least one optical device (OPFOCI1, OPFOCI2, OPFOCI3, O... | 12/30/1986 |
| 4622615 | Magnetic transducer for high density recording or writing A transducer for writing data on a magnetic carrier includes a magnetic circuit having a writing pole piece (PPI2), realized in thin magnetic layers of anisotropic magnetic material. A conductor (CMPI) for controlling the writing is coupled mag... | 11/11/1986 |
| 4610527 | Apparatus for developing latent magnetic images The invention relates to an apparatus for developing latent magnetic images used for example in magnetic printing machines. This apparatus includes a retouching device (20) comprising, first, a transport roller (27) which is displaced in the direction opp... | 09/09/1986 |
| 4566105 | Coding, detecting or correcting transmission error system Transmission errors in an interlaced Reed-Solomon cyclically coded binary message are detected and corrected. The message is coded and decoded by a system including several serially connected shift register assemblies. The first register of the first asse... | 01/21/1986 |
| 4549075 | Method for certifying the origin of at least one item of information stored in the memory of a first electronic device and transmitted to a second electronic device, and system for carrying out the method The object of the invention is a process for certifying the origin of at least one item of information stored in the memory of a first electronic device such as a portable card and transmitted to a second electronic device such as a portable card, and a s... | 10/22/1985 |
| 4544833 | Process and apparatus for authenticating or certifying at least one item of information contained in a memory of a removable and portable electronic carrier, such as a card Process and device for authenticating or certifying at least one item of information contained in a memory of a portable electronic carrier, such as a credit card. To certify an item of information (I) recorded in a memory (M) of a card (C), the process c... | 10/01/1985 |
| 4538058 | Power supply system of a device designed to cooperate with a removable electronic medium such as a card and device equipped with such a system The invention relates to a power supply system for a device designed to cooperate with a portable electronic medium, e.g., a credit or identification card having integrated electronic circuits therein. This system comprises a main power supply circuit (5a... | 08/27/1985 |
| 4531205 | Optoelectronic method of reading data on a magnetic medium and circuit for performing said method Optoelectronic method of reading the data retained on a magnetic medium (SM) on a plurality of tracks, receiving the data in the form of a plurality of luminous spots (IDi) projected onto a plane (P) where there are arranged a plurality of phot... | 07/23/1985 |
| 4514082 | Pattern generator for integrated circuits and process of generating patterns by means of said generator A pattern generator for integrated multilayer circuits, comprising a light source (SLI) for each one of the layers, at least one associated reticle (RETMI) bearing patterns to be reproduced thereon and which is transparent to light, and optical means (MPI... | 04/30/1985 |
| 4492178 | Apparatus for applying solid developer particles to the recording element of a non-impact printer The invention relates to magnetic printers and, more particularly, to an apparatus for applying solid developer particles to the recording drum of a non-impact printer. This apparatus comprises, on the one hand, a conveyor roller (22) which brings the dev... | 01/08/1985 |
