TOP DRUM
Filed: June 4, 1991
vacuum cleaning apparatus
Owned by: Spencer Turbine Company, The
Serial Number: 74173061
FUME ERASER
Filed: February 25, 1992
weld fume removal machine
Owned by: Spencer Turbine Company, The
Serial Number: 74249905
DIRT ERASER
Filed: February 25, 1992
vacuum cleaning machine
Owned by: Spencer Turbine Company, The
Serial Number: 74249975
LOBE-AIRE
Filed: July 26, 1994
positive displacement blowers
Owned by: Spencer Turbine Company, The
Serial Number: 74554755
STAMP
Filed: May 31, 1996
computer software for use in product selection in the field of industrial blowers
Owned by: Spencer Turbine Company, The
Serial Number: 75112418
ENERGY WATCHER
Filed: April 6, 2009
Electronic controls for motors for vacuum systems
Owned by: Spencer Turbine Company, The
Serial Number: 77707659
