Landmarks of Human Thought I - Catalog - Page 33
CURTISS Glenn Hammond:
Hydroaeroplane. Patent No.
1,420,609.
Application filed August 22, 1911;
patented June 20, 1922. Washington
D.C.: United States Patent Office
[1922].
Folio (280 x 188 mm) 9 pp. [1r] –
[4v] text, double column, five leaves
of diagrams printed on verso only.
CURTISS Glenn Hammond: Method
of Getting a Hydroaeroplane off the
Water into the Air. Patent No.
1,420,610.
Application filed August 22, 1911;
patented June 20, 1922. Washington
D.C.: United States Patent Office
[1922].
Folio (280 x 188 mm) 4 pp. [1r] –
[2r] text, double column, [2v] blank,
two leaves of diagrams printed on
verso only.
