Patent GB-1888-12736

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Year filed
Year granted 1888
Office GB
Patent number 12736
Inventors Francis Hilfreich
Inventor country
Applicant person
Applicant firm
Applicant type
Applicant is inventor? 1
Original title Navigable balloon
English title Navigable balloon
Tech fields LTA, balloon, dirigible, navigation
Filing date
Full specification filed date
Application number
Grant date
Granted? 1
Publication date  
Supplementary to patent
Related to aircraft? Yes
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IPCs
CPCs
Family year 1888
First filing?
Cites these patents
Citations from after 1930
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