Image Credit: Lumen Learning, Licensed CC BY 4.0
Read more about the 5Rs at "The Access Compromise and the 5th R" by David Wiley
Introduction to Open Educational Resources (OER) & Open Licensing
Patents are an imortant source of information, much of the material is never published in any other format. there are a number of free resources available on the Internet but for a comprehensive search, reference should be made to The Patents Office. The Office's website gives information on patents and patent applications.