Assignee

KEYSTONE FRICTION HINGE CO

US·2 granted patents·98 citations·filing 19922005

Technology mixE05F2E05Y2F24C2A47B1A47L1E05D1

Top patents by PatentIndex Score

2 records

Join the waitlist — get patent alerts

Get an alert when KEYSTONE FRICTION HINGE CO files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →