PORTO-MULLER
Filed: March 23, 1949
MULLING MACHINES
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 71575917
NATIONAL HYDRO FILTER
Filed: June 30, 1952
LIQUID GAS CONTACT FILTERS FOR REMOVING DUST FROM DUST LADEN AIR IN INDUSTRIAL INSTALLATIONS
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 71631996
HYDRO-BLAST
Filed: January 15, 1962
SAND BLASTING EQUIPMENT
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72135818
EVEN-FLO
Filed: October 1, 1962
APPARATUS FOR RECLAIMING USED SAND FOR USE IN FOUNDRIES AND THE LIKE
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72154275
NECO PLUS
Filed: July 1, 1963
APPARATUS-NAMELY, BLADES, PLOWS, SCRAPERS AND THE LIKE USED IN MACHINERY FOR MIXING AND MULLING GRANULAR MATERIAL AND THE…
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72172217
PULSE JET
Filed: August 30, 1963
AIR CONVEYOR SYSTEMS FOR GRANULAR MATERIAL, AND COMPONENT PARTS USED IN SUCH SYSTEMS
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72176110
BULLOCK-NATIONAL
Filed: May 8, 1964
ELECTRO-STATIC SEPARATORS FOR GRANULAR MATERIAL AND COMPONENT PARTS USED IN SUCH SYSTEMS
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72193029
RHEWUM
Filed: April 6, 1967
MECHANICALLY VIBRATED SCREENING APPARATUS, COMPONENT PARTS THEREOF, AND SCREEN MESH THEREFOR, FOR USE IN SEPARATING PARTICULATE…
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72268518
SHELL-PAK
Filed: July 3, 1969
APPARATUS FOR CONDITIONING GRANULAR MATERIAL-NAMELY, SYSTEMS FOR COATING HOT FOUNDRY SAND COMPRISING A SAND MIXER, SCREEN…
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72331767
JET FLAME
Filed: July 3, 1969
APPARATUS FOR CONDITIONING BULK GRANULAR MATERIAL-NAMELY, A HEATER FOR HEATING AND CONDITIONING FOUNDRY SAND
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72331768
WET BLANKET
Filed: February 25, 1972
DUST SUPPRESSOR APPARATUS FOR BLENDING WATER AND DRY FINE PARTICULATE MATERIALS TO SUPPRESS DISPERSION THEREOF
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 72416617
SIMPSON PASTE-MULLER
Filed: May 14, 1976
MIXER FOR MAKING LEAD ACID BATTERY PASTE
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 73087107
JR. PRO-MIX
Filed: April 27, 1978
MIXING MACHINES FOR FOUNDRY SAND
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 73168153
PASTEGUARD
Filed: September 18, 1986
PROGRAMMABLE ELECTRONIC CONTROLLERS FOR BATTERY PASTE MIXING EQUIPMENT
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 73620717
SANDGUARD
Filed: August 3, 1989
ELECTRONIC CONTROL UNITS AND MONITORS FOR USE WITH FOUNDRY SAND MIXERS, MULLERS AND COOLERS
Owned by: NATIONAL ENGINEERING COMPANY
Serial Number: 73816739
