BARRETT
Filed: September 16, 1905
LIFTING-JACKS
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 71012701
DUFF-NORTON
Filed: July 31, 1945
LIFTING JACKS
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 71486521
ROTARY UNION
Filed: April 8, 1952
CONNECTION DEVICES-NAMELY, ROTARY JOINTS
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 71627772
PSC
Filed: February 8, 1961
Rotary Joints, Steam [ Straps ] Traps; Air Controls, Quick Disconnect Couplings and Apparatus for the Treatment and Control…
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 72113300
AIRCOIL
Filed: December 6, 1961
Plastic Tubing for General Use
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 72133487
RAM-PAC
Filed: October 2, 1962
Manually and Motor Driven Hydraulic Series of Pumps and Rams, Hose Connections, Bases, Valves, and Gauges for the Same for…
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 72154338
JACTUATOR
Filed: September 13, 1963
Jacks and Parts Therefor
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 72176896
DUFF-NORTON
Filed: August 20, 1969
JACKS, BOTH MECHANICAL AND HYDRAULIC, WORM GEAR JACKS, RATCHET LEVER HAND OPERATED HOISTS, GEAR DRIVEN HAND OPERATED HOISTS…
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 72335722
SUPEROID
Filed: September 29, 1975
GEARING FOR USE IN CHAIN HOISTS
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 73064335
DUFF LYNX
Filed: November 12, 1981
Electric Powered Chain and Wire Rope Hoists
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 73336637
STURDILIFT
Filed: July 24, 1990
scissor linkage supported lift tables for use in factories and warehouses
Owned by: DUFF-NORTON COMPANY, INC.
Serial Number: 74081585
