Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Hand held calculator having a retractable cover

Hand held calculator having a retractable cover

US Patent 5530234 · Granted Jun 25, 1996

Estimated economic value: $25,402,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Device for providing active assistance to a body joint2023
Method and receptacle for receiving and releasing a pen2003
Cradle for supporting a PDA and similar portable electronic devices2002
Computer device2001
Card device receptacles2001
Button lock mechanism for handheld device2001
Personal digital assistant with a stylus compartment under a cover2000
Personal organizer2000
Cradle for personal organizer2000
Friction hinge device1998
Outer surfaces of a retractable cover for a hand held caculator1997
Outer surfaces of a retractable cover for a hand held caculator1997