Patent US-1887-359902
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Year filed | 1886 |
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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)