|
TCF. Undercarriages in
Aviation |
|
Charles B. Westerman |
| http://www.aerofiles.com/robinson-1908.jpg |
| http://www.aerofiles.com/page-index.html |
|
Their study is not complete:
http://www.aerofiles.com/patents-pre1904.html Appreciation of
kites, airships, aeroplanes, flying machines, etc. is needed to get a more
robust picture of patents.
|
| http://earlyaviators.com/ebier.htm |
