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 |
| 7263777 | Panel scribing device An apparatus for scribing the coating on a coated panel; comprising a base, at least one linear guide affixed to the base, a moveable table, a pivotable bracket mounted on the base, a cutter element mounted on the bracket; a loading mechanism positioned on top of th... | 09/04/2007 |
| 6907671 | Equisect span divider The present invention provides a measurement apparatus particularly suited for layout work. More specifically, the present invention is useful for taking a single measurement of a span or object, dividing the measured length into a desired number of equal segments, ... | 06/21/2005 |
| 5956856 | Drawing board assembly A drawing board assembly includes a rectangular board including two opposite end portions each having a side wall transversely defining an elongate guiding track therein and a top wall. Two inverted L-shaped sliding bases are each slidably supported on a ... | 09/28/1999 |
| 5056229 | Sail plotter A device for marking lines on a piece of sail cloth for cutting out sections therefrom for making a sail, comprising an elongated and horizontally extending table for supporting a length of sail cloth thereon and being wider than the width of the sail clo... | 10/15/1991 |
| 4342155 | Sign-making apparatus Apparatus for sign-making using dry transfer of letters from carrier sheets allows any of a number of different character sizes and row spacings to be provided. A carrier sheet bearing characters of a desired size is positioned relative to a carriage in d... | 08/03/1982 |
