Difference between revisions of "CA 244/9"
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(Created page with ":244 / (3) Aircraft Heavier Than Air (9) Airplane and Cylindrical Rotor Sustained<ref>https://historicip.com/patents/Canadian/cpc/244.htm</ref> {{References}} {{Standard tech...") |
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:244 / (3) Aircraft Heavier Than Air (9) Airplane and Cylindrical Rotor Sustained<ref>https://historicip.com/patents/Canadian/cpc/244.htm</ref> | :244 / (3) Aircraft Heavier Than Air (9) Airplane and Cylindrical Rotor Sustained<ref>https://historicip.com/patents/Canadian/cpc/244.htm</ref> | ||
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| + | First patent in CIPO search dated 1933. | ||
{{References}} | {{References}} | ||
