Inventions When were blue jeans invented? 1870s 1860s 1900s 1850s 1870s 1860s 1900s 1850s ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1890s 1800s 1880s 1900s 1890s 1800s 1880s ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first Lionel trains manufactured? 1890 1944 1920 1901 1890 1944 1920 1901 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the first solid state integrated circuit demonstrated? 1970s 1980s 1960s 1950s 1970s 1980s 1960s 1950s ANSWER DOWNLOAD EXAMIANS APP
Inventions The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name? Joseph Cyril Bamford John Christopher Baxter John Christopher Ballantyne Jack Croxford Baker Joseph Cyril Bamford John Christopher Baxter John Christopher Ballantyne Jack Croxford Baker ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bifocal Lens? Benjamin Franklin Rudolf Diesel Thomas Alva Edison Alfred B. Nobel Benjamin Franklin Rudolf Diesel Thomas Alva Edison Alfred B. Nobel ANSWER DOWNLOAD EXAMIANS APP
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