CA 244/9
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CA 244/9 is a Canadian patent category for heavier-than-air craft sustained in the air by "Airplane and Cylindrical Rotor" mechanisms.[1][2][3]
First patent in CIPO search dated 1933.
References
This wiki has 0 patents in category "CA 244/9".
Enclosing categories | CA 244/3 |
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Subcategories | |
Keywords | Airplane, Sustentation, Airfoil, Propulsion, Hybrid, USPC 244/10 |
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End year |