Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Graduated-load spring washer system for screws and threaded fasteners

Graduated-load spring washer system for screws and threaded fasteners

US Patent 4958970 · Granted Sep 25, 1990

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Linear frequency modulation apparatus and technique1999
Hot air tool for heat-shrink tubing1995
Telephone system with ubiquitous agents1994