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Roger Evan Billings (born 1948) is an American businessman, \"inventioneer\" and developer of high-tech products. Billings is best known for his pioneering work in the computer industry. He is also widely regarded as a developer of hydrogen energy technologies.

Billings is the author of two books on hydrogen energy technology, Hydrogen from Coal: A Cost Estimation Guidebook (1983) and Hydrogen World View (1991). He also co-wrote a technical book, WideBand Networking (2000) and authored numerous technical papers on computer networking. - Wikipedia