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 |
| 7278295 | Device for measuring the inertia tensor of a rigid body A device for measuring the inertia tensor of a rigid body at least consists of a rigid body (11), the inertia tensor of which is to be measured, at least one suspension means (20) with respect to at least one fixed point which sets at least one degree ... | 10/09/2007 |
| 5018382 | Apparatus for measurement and calculation of moment of inertia An apparatus for measuring moment of inertia incorporating a torsional pendulum and an analog electronic circuit. The circuit measures the period of oscillation, sets a scaling factor equal to the torsional coefficient of the resilient member, and compute... | 05/28/1991 |
| 4161876 | Mass properties measurement system The mass properties measurement apparatus of this invention includes a pair of opposed bearing assemblies, each comprising a fixed bearing and a movable journal, and a radially rigid connection between the movable journals located on an axis with a single... | 07/24/1979 |
