Search Results for: Articles of yarn, strip, twine, cordage, rope or cables, nesoi
act of ( stat. ) into law proclaiming that patents were to be authorized for "any useful art, manufacture, engine, machine, or device, or any improvement therein not before known or used". [ ] on july , , samuel hopkins of pittsford, vermont became the first person in the united states to file and to
of the claimant's invention, for a patent term of years with an extension of up to an additional years. [ ] however, the uruguay round agreements act of (uraa) changed the patent term in the united states to a total of years, effective for patent applications filed on or after june , , thus bringing...
https://en.wikipedia.org/wiki/Timeline_of_United_States_inventions_(before_1890)