Patent Information
Publication number: US390413 A
Patent Title: Nikola
Publication type: Grant
Publication date: Oct 2, 1888
Filing date: Apr 10, 1888
Original Assignee: The Tesla Electric company

Critical Features disclosed in this patent
1. Related to previous electric distribution systems developed by Tesla;
2. Examples of systems in operation with motors or converters, or both, in parallel;
3. Examples of systems in parallel; Examples of systems in series

Note: Nikola Tesla was an inventor who obtained around 300 patents worldwide for his inventions. Some of Tesla’s patents are not accounted for, and various sources have discovered some that have lain hidden in patent archives. There are a minimum of 278 patents issued to Tesla in 26 countries that have been accounted for. Many of Tesla’s patents were in the United States, Britain, and Canada, but many other patents were approved in countries around the globe. Many inventions developed by Tesla were not put into patent protection.

Reference: https://en.wikipedia.org/wiki/List_of_Nikola_Tesla_patent
US390413