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Unanswerd questions under tag patent

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In February 1841, English polymath, inventor, politician and scientist William Henry Fox Talbot patented................
posted Sep 30, 2019 by Divya Bharti
  • history
  • invention
  • personality
  • patent
0 votes
0 answers
In 1933 Richard Hollingshead in the USA patented what idea?
posted Jan 9, 2019 by Varun Kumar
  • usa
  • patent
+1 vote
0 answers
Who, in 1794, patented the cotton gin, that enabled cotton fibres to be plucked from seeds mechanically?
posted Oct 4, 2018 by Nikhil Pandey
  • patent
  • history
  • cotton
0 votes
0 answers
The first formal, patented, human use of sound to echo-locate under water was in relation to detecting what?
posted Sep 6, 2018 by Samardeep Acharya
  • echo
  • under water
  • first
  • patent
0 votes
0 answers
How long biological patent remain effective in India?
posted Aug 23, 2018 by anonymous
  • india
  • patent
0 votes
0 answers
The revolver, with a single barrel and a number of chambers for cartridges fired by a one-lock mechanism................
posted Oct 6, 2017 by Rahul Vaidya
  • patent
  • weapons
0 votes
0 answers
In England in 1778 Joseph Bramah of Yorkshire patented the first practical what?
posted Sep 28, 2017 by Sandeep Otari
  • patent
  • history
  • england
  • personality
0 votes
0 answers
In 1828 Casparus van Houten Sr. patented a hydraulic press that revolutionised the production of what?
posted Jun 28, 2017 by Mishthy Mukherjee
  • history
  • patent
+1 vote
0 answers
Who had an explosive idea and first patented DYNAMITE?
posted Jul 20, 2016 by Rahul Chandel
  • patent
  • dynamite
+2 votes
0 answers
What did Emal Fraze invent in 1959 (and patented in 1963)?
posted May 10, 2016 by Balwinder
  • invention
  • patent
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