IP Library › Granted Patent US 4,793,656
Granted Patent Utility
US 4,793,656 · App. 07/014,421

In-situ coal drying

Inventors: Mark A. Siddoway, Timothy S. Westby
Patented Case View Patent ↗
Granted: Dec 27, 1988 Filed: Feb 12, 1987
Inventors
Mark A. Siddoway
Timothy S. Westby
Assignee (at issue)
Shell Mining Company

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Quick Facts
Patent No.
US 4,793,656
App. No.
07/014,421
Filed
1987-02-12
Granted
1988-12-27
Kind
A