Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5548636 | Method and apparatus for providing user controlled call management services A method of providing call screening to a subscriber of personal communication services facilitates the screening of incoming calls by associating the number dialed by a calling party with a function or role of the dialed number. This function or role is ... | 08/20/1996 |
| 4800562 | Circuit and method for monitoring the quality of data in a data stream The invention provides a circuit for monitoring predetermined performance criteria of a transmission link by measuring a predetermined ratio of events in a data stream. A first counter having a predetermined maximum count is responsive to each of periodic... | 01/24/1989 |
| 4703500 | Power amplifier A power amplifier includes negative and positive terminals for connection across a direct current supply, an input for receiving a reference signal and an output for supplying an amplified replica of the reference signal. Positive polarity and negative po... | 10/27/1987 |
| 4517420 | Integral cup and hookswitch actuator for a telephone set A telephone set, adaptable for either wall or desk top mounting, has an integral hookswitch and cup. The cup is at the rear of the telephone set, in the desk mounting mode, and at the top in the wall mounting mode. The cup receives the receiver end of the... | 05/14/1985 |
| 4342079 | Duplicated memory system having status indication A fully duplicated memory system for a single central processing unit (CPU) is disclosed. The memory system comprises a primary and a secondary control unit and a primary memory bank and a secondary memory bank. Each memory bank comprises one memory contr... | 07/27/1982 |
