Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Telephone services

Telephone services

US Patent 6023504 · Granted Feb 8, 2000

Estimated economic value: $4,555,000 ⓘ

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and apparatus for data transmission rate control in a network2021
Measuring device and measuring method for low-attenuation measuring environments2021
Method and device for controlling transmission rate of a device under test2021
Lottery ticket and method for determining a prize associated with the lottery ti2017
Method and system for double-sided printing of a series of sheets2016
Method and apparatus for configuring, and compiling code for, a communications t2012
Retracting mechanism for use with both hard and hybrid retractable tops for vehi2008