Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Thread control mechanism for sewing machines

Thread control mechanism for sewing machines

US Patent 4457247 · Granted Jul 3, 1984

Estimated economic value: $90,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

System for gravimetrically dosing bulk goods components having a transport conta2014
Filter-fan unit2010
Method for the storage of deep-frozen goods2009
Device for conditioning recirculating air, especially clean room air2008
Coupled production of two esters2006
Eccentric screw-type pump with spare stator2006
Method and device for measuring the distortion of a high-frequency power amplifi2001
Catalytic converter housing arrangement2001
Blower unit for clean room1999
Upper feed mechanism for sewing machine and sewing machine having the same1997
Method and apparatus for making integral support plates for chair seats1997
Electrochemical actuator1996