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3D Systems Gains License Rights to Additional 3-D Printing Technology
Contact:
3D Systems, Public Relations Department
(661) 295-5600


VALENCIA, Calif., Apr. 29, 2002 - 3D Systems Corp. (Nasdaq: TDSC) today announced it has entered into an exclusive license agreement, including enforcement rights, with Richard Helinski of Narragansett, R.I., fundamental to dispensing multiple solidifiable materials from an inkjet print head to form three-dimensional objects.

The license of U.S. Patent No. 5,136,515 grants 3D Systems the right to sue for past, present and future patent infringement and recover profits and damages, as appropriate. The patent also pertains to the use of “radiation curable” material dispensed from a print head to form three-dimensional objects.

“These licensed patent rights are a valuable addition to 3D Systems’ portfolio of intellectual property,” said Chuck Hull, chief technology officer. “They allow us to improve our technology and further enhance our development of the multi-jet modeling (MJM) product line. We look forward to announcing more advancements in this area in the near future.”

Helinski was active in the early development work relating to phase-change color inkjet printing technology while at Howtek Inc. of Hudson, N.H., and holds eight U.S. patents.

About 3D Systems
Founded in 1986, 3D Systems provides solid imaging products and solutions that help reduce the time and cost of designing products and facilitate direct and indirect manufacturing. Its systems utilize patented technologies that create physical objects from digital input.

3D Systems currently offers the ThermoJet® solid object printer, SLA® (stereolithography) systems, SLS® (selective laser sintering) systems, and Accura™ materials. Product pricing in the U.S. ranges from $49,995, for the ThermoJet printer, to $799,000 for the high-end SLA 7000 system. The company licenses the complementary 3D Keltool® process, a method for producing steel mold inserts, and currently is developing systems that use composite paste materials for direct manufacturing.

More information on the company is available at www.3dsystems.com, or by phoning 888/337-9786, extension 814, or 661/295-5600 internationally. An investor packet can be obtained by calling 800/757-1799.

Note to editors: Accura is a trademark, and ThermoJet, SLA, SLS, Keltool and the 3D logo are registered trademarks of 3D Systems Inc.

Certain statements in this news release may include forward-looking statements which express the expectation, prediction, belief or projection of 3D Systems. These statements involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance and achievement of 3D Systems to be materially and adversely different from any future results, performance or achievement expressed or implied by these forward-looking statements. Factors that may cause actual results to differ from the forward-looking statements contained in this release and that may affect the company’s prospects in general include, but are not limited to: world economic conditions; the ability to timely and cost-effectively identify and obtain or independently develop resins adequate for use with 3D Systems’ products; the funding of amounts of capital adequate to provide for the working capital needs of the company; actions of competitors and customers; reliance on single or limited suppliers; and such other factors as are described in the company’s filings with the Securities and Exchange Commission, including annual reports on Form 10-K for the year ended Dec. 31, 2001, and 3D Systems’ current report on Form 8-K filed on March 21, 2002.


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