Patent drawing - Balance board rope-brake by Frederic G Ludwig.Fig 1 w...
The drawing is from the 1958 U.S. patent for a rocker-roller balance board designed by Frederic George Ludwig of Woodbridge, Connecticut. In the online database of the U.S. Patent and Trademark Office, the vers... More
Patent drawing - Balance board rope-brake by Frederic G Ludwig.Fig 1 P...
The drawing is from the 1958 U.S. patent for a rocker-roller balance board designed by Frederic George Ludwig of Woodbridge, Connecticut. In the online database of the U.S. Patent and Trademark Office, the vers... More
Patent drawing - Balance board rope-brake by Frederic G Ludwig Public ...
The drawing is from the 1958 U.S. patent for a rocker-roller balance board designed by Frederic George Ludwig of Woodbridge, Connecticut. In the online database of the U.S. Patent and Trademark Office, the vers... More
Patent drawing - Wobble board skeletal fulcrum by Bernard L. Coplin in...
This is one of the patent drawings for the first design of a wobble board known to have been patented. The inventor was Bernard L. Coplin of Carlsbad, New Mexico. The 1957 U.S. patent for this device was appl... More
Patent drawing - Wobble board skeletal fulcrum halves by Bernard L. Co...
These are two of the patent drawings for the first design of a wobble board known to have been patented. The inventor was Bernard L. Coplin of Carlsbad, New Mexico. The 1957 U.S. patent for this device was ap... More
Patent drawing - Wobbleboard NASA details 1964 Harold I. Johnson Publi...
These are two of the three patent drawings for a device made by the U.S. government's National Aeronautics and Space Administration to train its astronauts for spacewalks. The inventor was Harold I. Johnson o... More
Patent drawing - Wobbleboard NASA man 1964 Harold I. Johnson Public do...
This is one of the three patent drawings for a device made by the U.S. government's National Aeronautics and Space Administration to train its astronauts for spacewalks. The inventor was Harold I. Johnson of ... More
Pirates of the Sky 9
"Pirates of the Sky" aerialists act, performing at the 2008 New York State Fair. Photos at <www.Flickr.com> that are a frontal view of this juggler during this event show the board to be about 27 inches long an... More