Canada - 16 Slide Rule Patents

Work in Progress - Clickable Thumbnails to PDF files will be added first followed by descriptions

1944 - 1952

CA457012A
CA458817A
CA465387
CA481293A
CA483693A

1952 -1958

CA484510A
CA489176A
CA515949A
CA531002A
CA532587A

1958 - Present

CA565467A
CA644977A
CA671991A
CA693696A
CA1083545A1
CA2156036A1

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