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| Number | Title | Issue Date |
| 5884568 | Enclosed utility table An improved enclosed multi-purpose utility table adaptable for mounting on a horizontal fence railing or for resting on a floor surface or wheelable on a floor surface. The table includes a rectangular base member with a pair of stationary secured end pla... | 03/23/1999 |
| 5749411 | Spruing assembly A spruing assembly for receiving investment material in the production of an investment mold for castings by the "lost wax" process which includes a hollow chamber to receive the investment material. Included within the chamber is one or more sprue for su... | 05/12/1998 |
| 4636019 | Connector mechanisms A connector mechanism for electrically connecting two structures 22, 24 carrying conducting lines 26, comprises fixed contacts 28 on one of the structures and floating contacts 30 on the other of the structures, the floating contacts being free to move to... | 01/13/1987 |
| 4635186 | Detection and correction of multi-chip synchronization errors A uniprocessor if formed on plural independently controlled chips each including a primary instruction driven controller and a secondary error driven self-sequencing controller. Each instruction is supplied in parallel to each primary controller which gen... | 01/06/1987 |
| 4633243 | Method of storing characters in a display system In a method of storing characters in a display system having a display device with an orthogonal matrix of addressable points, each character is represented as a succession of strokes each constrained to lie in one of the eight fundamental directions of t... | 12/30/1986 |
| 4542950 | Zero insertion force edge connector with wipe cycle A ZIF connector block for establishing an electrical connection between the I/O pads of an edge-connected printed circuit board and a set of printed conductors. The connector has two opposing rows of contacts. The contacts are of two different lengths, bo... | 09/24/1985 |
| 4507752 | In-place index compression The present invention provides in a data processing system storing a plurality of discrete entities, each identified by a single parameter within a monotonic parameter spectrum, resident at an addressable location and locatable by searching a system maint... | 03/26/1985 |
| 4500750 | Cryptographic application for interbank verification In a data communication network which includes terminals interconnected via a central switch, a process for verifying the identity of a terminal user who is provided with secret data associated with his identity. In carrying out the verification process, ... | 02/19/1985 |
| 4386234 | Cryptographic communication and file security using terminals A data security device which includes storage means for storing a master cipher key, cryptographic apparatus for performing cryptographic operations and control means for controlling the writing of a master cipher key into the storage means, controlling t... | 05/31/1983 |
| 4238853 | Cryptographic communication security for single domain networks A communication security system for data transmissions between remote terminals and a host system. The remote terminals and the host system include data security devices capable of performing a variety of cryptographic operations. At initialization time, ... | 12/09/1980 |
| 4238854 | Cryptographic file security for single domain networks A file security system for data files associated with a host data processing system. The host system includes a data security device which contains a secure host master key and is capable of performing a variety of cryptographic operations. At initializat... | 12/09/1980 |
| 4227253 | Cryptographic communication security for multiple domain networks A communication security system for data transmissions between different domains of a multiple domain communication network where each domain includes a host system and its associated resources of programs and communication terminals. The host systems and... | 10/07/1980 |
| 4218738 | Method for authenticating the identity of a user of an information system Secure hardware is provided for cryptographically generating a verification pattern which is a function of a potential computer user's identity number, the potential computer user's separately entered password, and a stored test pattern. The test pattern ... | 08/19/1980 |
| 4203166 | Cryptographic file security for multiple domain networks A file security system for data files created at a first host system in one domain and recovered at a second host system in another domain of a multiple domain network. Each of said host systems contain a data security device provided with multiple host k... | 05/13/1980 |
| 4193131 | Cryptographic verification of operational keys used in communication networks In a data communication network providing communication security for communication sessions between a first station and a second station where each station has cryptographic apparatus provided with an operational key which should be common to both station... | 03/11/1980 |
| 4122496 | Apparatus and method for digital halftone reproduction Apparatus and method of producing a halftone image reproduction of a continuous tone photograph. Scanning means is provided to scan the photograph to be reproduced along a series of scan lines. Incremental control parameters are provided in accordance wit... | 10/24/1978 |
| 4074066 | Message verification and transmission error detection by block chaining A message transmission system for the secure transmission of multi-block data messages from a sending station to a receiving station. The sending station contains cryptographic apparatus operative in successive cycles of operation during each of which an input... | 02/14/1978 |
| 3982231 | Prefixing in a multiprocessing system A shared storage multiprocessing system in which storage is arranged into blocks of storage for storing blocks of data and in which prefixed storage areas for the processors are assigned to predetermined blocks of storage in accordance with different pref... | 09/21/1976 |
| 3962539 | Product block cipher system for data security A device for ciphering a block of data bits under control of a cipher key. The cipher device performs a ciphering process for the block of data by carrying out an operation in which the block of data bits is first expanded by duplicating predetermined one... | 06/08/1976 |
| 3958081 | Block cipher system for data security A device for ciphering message blocks of data bits under control of a cipher key. The cipher device performs an enciphering process for each message block of data by carrying out a predetermined number of iteration operations in the first of which a first... | 05/18/1976 |
