Patents by Inventor Preston F. Marshall, Jr.

Preston F. Marshall, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Space vehicle and method
    Patent number: 5678784
    Abstract: A space vehicle has two stages: one containing an air motor; the other containing a rocket propellent motor. After the space vehicle has been launched, flexible wings such as parafoils can be used to recover stages of the space vehicle. In addition, flexible wings such as a parafoil can be used to aid in the delivery payload in the second stage into its orbital state.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: October 21, 1997
    Assignee: Vanguard Research, Inc.
    Inventors: Preston F. Marshall, Jr., Mel Chaskin