Race stopwatch with plural displays and operating modes

Radio clock mechanism having drowse feature

Radio telephone timepiece including a sim card

Radio time signal clock correcting means

Random time

Read-only sequence controller

Readily settable balanced digital time displays

Real time clock using computer and separate counting means

Reduction gear of electronic wristwatch with stepping motor...

Redundant aircraft clock synchronization

Redundant timer system and method

Regatta timing watch

Register resetting mechanism

Reminder clock

Requested time adjustment for accurate data exchange

Reserve drive mechanism for master clock

Reset circuit

Reset mechanisms

Reset system for digital electronic timepiece

Resuscitation assistive timer