AIRCRAFT PATENTS
AIRCRAFT PATENTS
Copies of patents may be obtained by writing the Patent Office, Washington, D. C., giving the patent number and the name of the inventor. Cost 10c each. Patent No. 1,637,769—LANDING AND TAKING-OFF STATION FOR AIRCRAFT. Walter Jay Ennisson, Brooklyn, N. Y.; Edith A. Ennisson executrix of said Walter J. Ennisson, deceased.