G n Galileo Galilei n Manuel Garcia n Henri Giffard n Robert Goddard n John Greenwood n Thomas Gryll.

GG Galileo GalileiGalileo Galilei Manuel GarciaManuel Garcia Henri GiffardHenri Giffard Robert GoddardRobert Goddard John GreenwoodJohn Greenwood Thomas GryllThomas Gryll

ThermometerThermometer

AirshipAirshipEndoscopeEndoscope

RocketsRockets

FaucetFaucetDentist’s DrillDentist’s Drill

HH Herbert HaddanHerbert Haddan R. N. HargerR. N. Harger John HaringtonJohn Harington Peter HenleinPeter Henlein Joseph HenryJoseph Henry Hero of AlexandriaHero of Alexandria H. M. HobsonH. M. Hobson Marcian HoffMarcian Hoff Hoffmann-La RocheHoffmann-La Roche Edwin HolmesEdwin Holmes Christiaan HuygensChristiaan Huygens

StaplerStapler Breath TesterBreath Tester

Toilet TankToilet Tank Clockwork MotorClockwork Motor

Car JackCar JackElectricElectric

BellBellElectricElectricMotprMotpr

Window WinderWindow Winder MicroprocessorMicroprocessor

Liquid Crystal DisplayLiquid Crystal Display Burglar AlarmBurglar Alarm

Mechanical ClockMechanical Clock

IJKIJK IBMIBM W. Jaeger & E. MeiliW. Jaeger & E. Meili Zacharias JanssenZacharias Janssen Whitcomb JudsonWhitcomb Judson Jack KilbyJack Kilby Sergei KorolyevSergei Korolyev

Dot-Matrix PrinterDot-Matrix Printer Smoke DetectorSmoke Detector

MicroscopeMicroscope ZipperZipper

SatellitesSatellitesSilicon ChipSilicon Chip