This Day in Patent History - On November 25, 1975, Robert S. Ledley was granted a patent for "diagnostic X-ray systems" known as the CAT-Scan On November 25, 1975, Robert S. Ledley was granted a patent for “diagnostic X-ray systems” known as the CAT-Scan. He pioneered the use of electronic…
Nikola Tesla Patent #7 – Dynamo electric machine – US 359748 Patent Information Publication number: US359748 A Patent Title: Dynamo-electric machine Publication…
Nikola Tesla Patent #6 – Regulator for Dynamo Electric Machines – US350954 Patent Information Publication number: US350954 A Patent Title: Regulator for dynamo-electric…
This Day in Patent History - On November 4, 1862, Richard Gatling received a patent for the machine gun On November 4, 1862, Richard Gatling received a patent for the machine gun. …
This Day in Patent History - On January 23, 1849, a patent was granted for an envelope-making machine, greatly reducing the time needed for the mass production of envelopes On January 23, 1849, a patent was granted for an envelope-making machine, greatly reducing the time needed for the mass production of envelopes. Patent…
