Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Apparatus for maintaining adequate overhead space for car top mechanics in elevator systems

Apparatus for maintaining adequate overhead space for car top mechanics in elevator systems

US Patent 6481534 · Granted Nov 19, 2002

Estimated economic value: $17,857,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Elevator door lock sensor device including proximity sensor elements in a select2010
Top of elevator car inspection station with alarm2003
Rooftop safety apparatus for elevator servicing2002
Elevator cab floor acceleration control system2001