USD234350S - Helicopter with coaxial rotors - Google Patents

Helicopter with coaxial rotors Download PDF

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Publication number
USD234350S
USD234350S US D234350 S USD234350 S US D234350S
Authority
US
United States
Prior art keywords
helicopter
coaxial rotors
coaxial
rotors
elevation view
Prior art date
Application number
Other languages
English (en)
Inventor
Flight International
Original Assignee
United Aircraft Corporation
Filing date
Publication date

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