Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Interface device for converting a computer printer port into an input/output port

Interface device for converting a computer printer port into an input/output port

US Patent 4635222 · Granted Jan 6, 1987

Estimated economic value: $6,706,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Single-line, series connected, data transfer control system1999
Automatic brightness limiter circuit1993
Billing data display system for a closed circuit television system1990
Interface device1987
Interface device1987
Interface device1987
System for processing picture information1987
System for processing picture information1987
Video format signal generator with improved synchronization system1987
Amplifier circuit1985
Amplifier circuit1984
Wide-bandwidth low-distortion amplifier1983