1.
How to Get a Patent: A Complete Compendium of Useful Information for Inventors (Classic Repr...
by Co, John Wedderburn, John W...
ISBN: 9781332141333
List Price: $7.97
2.
How to Get a Patent : A Complete Compendium of Useful Information for Inventors (Classic Rep...
by Co, John Wedderburn
ISBN: 9781528083102
List Price: $25.42