Patents by Inventor Henry B. Durham

Henry B. Durham 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).

  • Contact lens applicator
    Patent number: 4200320
    Abstract: A contact lens applicator in which a lens holding ring is supported by two parallel and extremely flexible members which extend from opposite sides of the ring and attach to a handle.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: April 29, 1980
    Inventor: Henry B. Durham
  • Ball dropping device for batting practice
    Patent number: D293808
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: January 19, 1988
    Inventors: Henry B. Durham, Kenneth D. Petty