Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 5146239 | Tag printer The present invention uses heat-sensitive paper with an adhesive face and plural kinds of identification portions, arranged in the longitudinal direction, provided on the reverse thereof and has a feed portion setting up a relative motion between the heat... | 09/08/1992 |
| 4983991 | Method and apparatus for marking a film in an X-ray apparatus The inventon relates to a method and apparatus for marking or recording patient-related information and other necessary data in connection with X-ray imaging on a certain section of a film (6) by using a marking apparatus (2) which is movable relative to ... | 01/08/1991 |
| 4901158 | Verification stamp equipment Disclosed is a stamping device for use in facsimile equipment, wherein a document has a mark stamped hereon after its information has been transmitted. The stamp device is composed of a stamp body which has a stamp face for marking the document and a hand... | 02/13/1990 |
| 4529871 | Price marking system A price marking system for use with a product checkout system such as a supermarket checkout system. In the price marking system a label printer and label applicator are located in the checkout counter immediately downstream of the product scanner. When t... | 07/16/1985 |
| 4346718 | Apparatus and methods for recording time intervals A time interval recorder stores the magnitude of time intervals between events, e.g. heartbeats, over a period. The data is stored as a sequence of pairs of numbers representing respectively the magnitude of a time interval and the number of successive oc... | 08/31/1982 |
| 4286112 | Message preparation timing apparatus An apparatus is disclosed for use with teletypewriter consoles in teleprinter communication networks for providing transmission time information during message preparation; namely, the number of whole minutes of message time plus either the number of char... | 08/25/1981 |
