Monthly Archives: July 2014

Robertson screw patent bound with Robertson screws

When Canadian inventor Peter Robertson filed his 1909 Canadian patent for the now ubiquitous Robertson screw (patent 116463), he bound the patent application using his new screws. You can see them in the scans in the Canadian Intellectual Property Office’s database:

Canadian Patent Document 116463. Claims page. Image 1 of 1

That’s dedication to a new invention.

Robertson was also granted a patent by the US patent office, but their scans are cleaner and don’t show the binding.

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