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 |
| 3937938 | Method and apparatus for assisting in debugging of a digital computer program The specification discloses a technique for assisting in the detection of errors and malfunctions in the operation of a digital computer program. The system includes circuitry for connection to the back plane of a digital computer for receiving representa... | 02/10/1976 |
| 3934095 | Method and system for short term queuing of telephone calls in automatic inter-city telephone call connection system The specification discloses a system for automatically controlling the connection of telephone calls between a plurality of input telephone trunk lines at a user's dedicated telephone switching facility and a preset number of output telephone trunk lines.... | 01/20/1976 |
| 3931476 | Method and system for automatically controlling the connection of inter-city telephone calls at a users facility The specification discloses a system for automatically controlling the connection of inter-city telephone calls between a plurality of input telephone trunk lines at a user's branch exchange and a preset number of output telephone trunk lines. Circuitry i... | 01/06/1976 |
