Patents by Inventor Rodrick C. Robinson

Rodrick C. Robinson 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).

  • Apparatus for dispensing agricultural liquid chemicals
    Patent number: 5320253
    Abstract: A manual applicator, for dispensing liquid agricultural chemicals, comprises a reservoir for the liquid chemical and hand-held dispensing apparatus. The reservoir is provided with a non-return valve adapted to allow ar to flow into the reservoir only when the pressure in the head space in the reservoir falls below a predetermined pressure below atmosphere.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: June 14, 1994
    Assignee: Horstine Farmery Limited
    Inventor: Rodrick C. Robinson