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 |
| 7395633 | Rainwater collection and diverging system A rainwater collection and diverging system includes a housing that has a bottom wall and a perimeter wall. A door is positioned in the bottom wall. A hinge hingedly couples the door to the bottom wall and a biasing member is attached to the door and biases the door... | 07/08/2008 |
| 6219972 | Method and apparatus for preventing blockage of a water flow path A method and apparatus for preventing blockage of a water flow path from a gutter of a building through a downspout includes a receptacle which is rotatably supported beneath the gutter. The receptacle is movable between a collecting orientation and an em... | 04/24/2001 |
| 4796787 | Apparatus for precisely measuring and supplying liquid An apparatus for supplying an accurately measured volume of liquid, comprising a vessel filled with the liquid, a cylinder loosely and slidably fitted into the vessel from above, and a sealing box at the top of the vessel sealing the vertical motion of th... | 01/10/1989 |
| 4550745 | Device for discharging a mixture of two liquids This invention relates to a device for the constant replenishment of an animal dipping bath, or for use in any situation where it is desired to have a concentrate diluted with a liquid with little or no liquid supply pressure. The device consists of a two... | 11/05/1985 |
| 4347132 | Reverse osmosis expansible pressurized permeate storage having permeate and concentrate controls A water treatment and storage system includes a reverse osmosis treatment unit having an untreated water input line, a treated water output line and a bleed water output line. An expandable container, compressed by a spring arrangement, is provided for st... | 08/31/1982 |
