Who was the first American female to patent her invention, a method of weaving straw with silk?
Answer: D
No answer description available for this question.
Enter details here
What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?
Answer: D
The pacemaker is an electrical device that regulates the heartbeat.
Enter details here
World's first mechanical air conditioner was invented and manufacture by
Answer: D
No answer description available for this question.
Enter details here
Radioactivity was discovered by
Answer: A
No answer description available for this question.
Enter details here
Who is often called the 'first African-American' inventor?
Answer: C
Banneker was a member of the planning committee that designed Washington, DC along with Pierre L'Enfant. When L'Enfant was fired Banneker recreated the plans from memory.
Enter details here
Mercury Thermometer
Answer: C
No answer description available for this question.
Enter details here
Integrated circuit was created by two engineers working separately in
Answer: C
No answer description available for this question
Enter details here
FROZEN FOOD - Who discovered the first practical method of freezing food?
Answer: A
No answer description available for this question.
Enter details here
In what year was the ball bearing patented?
Answer: A
No answer description available for this question.
Enter details here
The Solar System was discoverd by
Answer: A
No answer description available for this question.
Enter details here