Paulitschky - Dirigible aircraft for aerial navigation, French Patent 375975 of 1907
A French patent filing of 1907 by Carl and Rosa Paulitschky for a dirigible flying machine, drafted for examiners at the patent office in Paris. The single sheet carries fine ink line diagrams in plan and section \u2014 rotor mast, geared shaft, gondola, jet nozzles \u2014 with numbered part labels, handwritten marginalia and office stamps on tea-toned paper.
