Granted Patent
Utility
US 5,252,124 · App. 07/822,283
Convertible asphalt and soil remediation plant and methods of operation
Inventors:
David F. Brashears, Edward D. Curtis
Patented Case
View Patent ↗
Granted: Oct 12, 1993
Filed: Jan 21, 1992
Inventors
David F. Brashears
Edward D. Curtis
Assignee (at issue)
Thermotech Systems Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.