Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Arrangement and method for preventing false triggering in an optically switched buttonhole mechanism

Arrangement and method for preventing false triggering in an optically switched buttonhole mechanism

US Patent 4393797 · Granted Jul 19, 1983

Estimated economic value: $2,353,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Truck bed extension cover2015
Starting device for internal combustion engines2003
Starting apparatus for internal combustion engines2001
Wheelchair wheel-rim1992
Wheelchair wheel rim1992
Timing arrangement for a sewing machine1986
Low torque pattern selecting mechanism for a sewing machine1985
Thread cutter in sewing machine face plate1984
Sewing machine cam controlled feed engaging and disengaging mechanism1984
Arrangement for securing in a slide plate hold-down spring in a sewing machine b1984
Presser foot and shank design (snap-on)1983
Pocket button attaching device1982