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 |
| 6123064 | Evolving heating concept A heating system has a modular section which can be converted to use as a store or boiler and to burn either solid or liquid and gaseous fuels. The system can be further expanded by addition of more than one module to increase the heating capacity of the ... | 09/26/2000 |
| 4359951 | Low profile portable power plant A portable power plant for combustion of solid fuels with contiguous generation of steam and power, wherein the plant is constructed with a low-profile, contiguous dual stage combustion chamber and adjacent dual stage boiler chamber for controlled pyrolys... | 11/23/1982 |
