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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7353401 | Device and method for data protection by scrambling address lines A device and method for data protection by scrambling address lines is disclosed, which includes a redundancy area-setting unit, a redundancy area-mapping rule unit, an area check unit, an address-mapping unit and a multiplexer. The area check unit compares an addre... | 04/01/2008 |
| 7251151 | Non-volatile memory comprising means for distorting the output of memory cells The present invention relates to a non-volatile memory comprising a memory array comprising functional memory cells and non-functional memory cells linked to at least one non-functional word line. A word line address decoder comprises a special decoding section link... | 07/31/2007 |
| 6175625 | Control circuits for electric coding machines The machine involves code wheels in cascade or in a maze with random or mixed circuits which operate a printing device to print the cipher conjugate of the letter on an operated key when the keyboard is connected to one end of the code wheel maze, and to ... | 01/16/2001 |
| 6130946 | Cryptographs The cryptographic system automatically and continuously changes the cipher equivalents representing plaintext characters so as to prevent any periodicity in the relationship. The system has a series of juxtaposed, rotatable, connection changing mechanisms... | 10/10/2000 |
| 6097812 | Cryptographic system The crytographic system automatically and continuously changes the cipher equivalents representing plaintext characters so as to prevent any periodicity in the relationship. The system has a series of juxtaposed, rotatable, connection changing mechanisms ... | 08/01/2000 |
| 5321755 | Information-encrypting device and method A method of encrypting a sequence of characters such as a code number on an information slide or disc is provided. The method allows the encryption of a plurality of sequences on a single user-markable disc or slide which may be deciphered by a reference ... | 06/14/1994 |
| 5046096 | Windowed rotatable cover which reveals one indicia on one surface and a second indicia on a second surface corresponding to the first that encodes and decodes messages A simple and inexpensive apparatus for encoding and decoding messages is disclosed. The apparatus comprises a first surface having a first series of indicia and a second surface having a series of letters. Each of the letters correspond to a unique one of... | 09/03/1991 |
| 4885779 | Personal identification encryptor system with error-correcting code and method An inexpensive encryption device, system and method includes coded alphanumeric characters preprinted according to different key codes on mail-out forms that can be manipulated by a prospective user to yield encrypted data that can be returned over unsecu... | 12/05/1989 |
| 4870683 | Personal identification encryptor system and method An inexpensive encryption device, system and method includes coded alphanumeric characters preprinted according to different key codes or mail-out forms that can be manipulated by a prospective user to yield encrypted data that can be returned over unsecu... | 09/26/1989 |
| 4829568 | System for the printing and reading of encrypted messages A system for the metering of encrypted postage and similar indicia includes a device for printing such indicia and a device for reading such indicia. The printing is accomplished with a dot matrix printer driven by signals obtained by altering character g... | 05/09/1989 |
| 4473228 | Three-dimensional combinatorial linkage A three-dimensional interchange linkage which permits any of a number of devices abounding a core to be laterally interchanged. A preferred form of the linkage is found in an icosahedral puzzle in which groups of five separate pieces can be rotated to re-... | 09/25/1984 |
| 4415158 | Puzzle Puzzles, including both two dimensional and three dimensional versions, are comprised of movable segmented segments on a base. In various embodiments the base is a sphere. The segmented sections form geometric figures and each geometric figure has a commo... | 11/15/1983 |
| 4401973 | Cycle limiting means for an electromechanical decoder 1. A mechanism comprising a base member, a shaft supported by the base member, a rotatable code wheel assembly including a first wheel element and a second wheel element, carried by the shaft a plurality of code posts carried by one of said wheel elements... | 08/30/1983 |
| 4331845 | Output switch assembly and operating mechanism A mechanism comprising a code wheel assembly including an angularly movable shaft, a first element affixed to said shaft, a second element angularly movable on said shaft, and a third element angularly movable on said shaft, a plurality of main code posts... | 05/25/1982 |
| 4154006 | Coding and decoding machine 3. A coding and decoding machine, comprising a plurality of keys each of ch bears a symbol, a plurality of indicating elements each of which represents a symbol on one of said keys, and means to connect each of said keys at random to an indicating elemen... | 05/15/1979 |
