Patent US-1887-359902

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Year filed 1886
Year granted 1887
Office US
Patent number 359902
Inventors Matthew Joseph STEFFENS
Inventor country US
Applicant person
Applicant firm
Applicant type
Applicant is inventor? 1
Original title Aerial photographic apparatus
English title Aerial photographic apparatus
Tech fields photography, LTA, electronics
Filing date 1886-02-23
Full specification filed date
Application number
Grant date 1887-03-22
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 192803
Patent agent
Assigned to
National tech categories 396/263
IPCs USPC 244/33
CPCs 396/284
Family year 396/502
First filing? G03B17/425
Cites these patents 1887
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims

Sources

{{USpatentsources|359902 espacenet] camera mounted on balloon for downward photographs; attached to battery on the ground; wires will contain triggers to calibrate camera focus with distance from ground (!) Inventor location (imputed by HistPat): Chicago, IL, Cook county, IL (FIPSloc=17031)