1) Edison held hundreds of them 2) Exclusive rights 3) Exclusivity documents 4) Inventing safeguards 5) Invention protections 6) Monopoly-right documents 7) Preventers of many thefts 8) Safeguards of a kind 9) Some are pending 10) They might be pending 11) Trademark cousins 12) Trademark relatives
Found on
https://www.crosswordclues.com/clue/patents
Exclusive legal rights or privileges applied to inventions, plants, etc. ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.
