Patents by Inventor Dorothy E. Kempka

Dorothy E. Kempka 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).

  • Garbage can lock
    Patent number: 4194774
    Abstract: A garbage can lock made of three parts of metal material, installed in two units, second unit is installed on the opposite side of the garbage can body and lid in a manner as the first unit; since the second unit is indentical to the first unit herein of this invention in construction, arrangement of parts and total, I am herewithin describing only one unit, with reference to this, a more detailed description of the installation of the two components herein will be described hereinafter.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: March 25, 1980
    Inventor: Dorothy E. Kempka
  • Adjustable plant support
    Patent number: 4164094
    Abstract: A plant support made in two sections of wooden, plastic or metal material, so that the sections can be added to one another to increase the length of the support as the plant grows; AIR VENTILATION SLOTS for prevention of SWELLING, OXIDATION and CORROSION of the said MATERIALS in order that the hereby above Adjustable Plant Support is in fact a TRULY Adjustable Plant Support as claimed by me above and hereafter.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: August 14, 1979
    Inventor: Dorothy E. Kempka