HELI-COIL
Filed: May 5, 1942
Spark Plug Bushings
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 71452797
HELI-COIL
Filed: March 16, 1945
SCREW CONNECTIONS AND PARTS OF SCREW CONNECTIONS-NAMELY, SCREWS, BOLTS, STUDS, NUTS, THREAD INSERTS AND THREAD BUSHINGS,…
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 71480972
HELI-COIL
Filed: March 16, 1945
TOOLS, APPARATUS AND MACHINES FOR USE IN CONNECTION WITH SCREW CONNECTIONS AND THEIR PARTS-NAMELY, SCREW-THREAD-TAPPING…
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 71480973
HELI-COIL
Filed: May 28, 1948
GAGES FOR USE IN SCREW CONNECTIONS WITH OR WITHOUT WIRE THREAD-NAMELY, SCREW THREAD GAGES AND FLUSH GAGES
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 71558028
HELI-COIL
Filed: April 5, 1960
Self Locking Wire Fasteners, Screw Locks, and Self Locking Nuts
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 72094398
HELI-COIL
Filed: August 2, 1962
Screw Thread Inserts Loaded in Plastic Strips for Magazine Feeding
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 72151637
HELI-COIL
Filed: August 22, 2002
Power tools for installing helical inserts, namely, taps, prewinders, mandrels, spacers, and tang break-off tools
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 76448654
HELICOIL
Filed: March 19, 2015
Power tools for installing screw thread inserts, namely, taps, prewinders, mandrels, spacers, and tang break-off tools
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 86569777
HELICOIL
Filed: March 19, 2015
Hand tools for installing and extracting screw thread inserts, namely, taps, prewinders, mandrels, extractors and tang break…
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 86569790
HELICOIL
Filed: March 19, 2015
Metal screw connections and part of screw connections, namely, screw thread inserts, threaded inserts and threaded bushings…
Owned by: BÖLLHOFF PRODUKTION GMBH
Serial Number: 86569795
