Listed below is one site which does deal with "design register".

http://www.nationalarchives.gov.uk/designregisters/
http://brevets-patents.ic.gc.ca/opic-cipo/cpd/eng/introduction.html

So I suspect more likely a Canadian origin than a British connection just due to geography. The top call is similar to CHARLES H PERDEW call for much earlier. Suggest you do a little research on duck call makers and their bbs. Someone there can give you the entire story. Calls are very collectable and they share their knowledge freely. With your fine pictures the interest should get you a fast response.