Patents Represented by Attorney Richard O. Bartz

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  • Dispensing instrument and method
    Patent number: 4182328
    Abstract: A fluid dispensing instrument and method for placing a drug material into the canals of the Fallopian tubes of a female. The instrument has a housing carrying a piston and cylinder assembly. An elongated flexible tubular probe attached to the housing carries an expandable sleeve. The piston and cylinder assembly is operable to fully collapse the sleeve prior to insertion through the cervical opening into the uterine cavity. After the sleeve is inserted into the uterine cavity, an ampulla storing the drug material is loaded into the instrument. The piston and cylinder assembly is then actuated to initially partially expand the sleeve. Operation of the piston and cylinder assembly moves a plunger into the ampulla to dispense the drug material into the uterine cavity above the partly expanded balloon. The sleeve is then fully expanded to move the drug material from the uterine cavity into the canals of the Fallopian tubes.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: January 8, 1980
    Assignee: Population Research Incorporated
    Inventors: Lee R. Bolduc, Eugene A. Dickhudt
  • Hockey stick
    Patent number: D244220
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: May 3, 1977
    Assignee: The Northland Group, Inc.
    Inventor: Robert J. De brey
  • Soil working hand tool
    Patent number: D246027
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: October 11, 1977
    Inventor: Richard O. Bartz
  • Garden marker
    Patent number: D247590
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: March 21, 1978
    Inventors: Jesse J. Atherton, Marie E. Atherton
  • Blank for a contained vent and insulation baffle
    Patent number: D247628
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: March 28, 1978
    Inventor: Bruce K. Ward
  • Key label
    Patent number: D248960
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: August 15, 1978
    Inventor: Yvonne J. Iverson
  • Combined vent and block baffle
    Patent number: D249704
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: September 26, 1978
    Inventor: Bruce K. Ward
  • Vent
    Patent number: D250420
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: November 28, 1978
    Assignee: Diversified Insulation, Inc.
    Inventor: Bruce K. Ward
  • Lift attachment for silo unloader
    Patent number: D251063
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: February 13, 1979
    Assignee: Veda, Inc.
    Inventor: Glen D. Hansen
  • Key chain fob
    Patent number: D252323
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: July 10, 1979
    Inventor: Lester V. Molenaar
  • Microphone stand
    Patent number: D252511
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: July 31, 1979
    Inventor: Marlin J. Genz
  • Spinning toy
    Patent number: D252830
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: September 4, 1979
    Inventor: Wilbert S. Johnson
  • Baseball game plate
    Patent number: D252938
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: September 18, 1979
    Inventor: Darrell F. Binderup
  • Pinwheel
    Patent number: D253776
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: December 25, 1979
    Assignee: James Industries, Inc.
    Inventor: Lester V. Molenaar
  • Blank for a combined vent and baffle
    Patent number: D255925
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: July 15, 1980
    Inventor: Bruce K. Ward
  • Ratchet wrench lever
    Patent number: D255978
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: July 22, 1980
    Inventor: Robert V. Albertson
  • Combined vent and baffle
    Patent number: D256157
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: July 29, 1980
    Assignee: Diversified Insulation, Inc.
    Inventor: Bruce K. Ward
  • Blocking baffle
    Patent number: D256158
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: July 29, 1980
    Assignee: Diversified Insulation, Inc.
    Inventor: Bruce K. Ward
  • Platform support
    Patent number: D256975
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: September 23, 1980
    Inventor: Daniel L. Cummings
  • Pinwheel
    Patent number: D257364
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: October 14, 1980
    Assignee: James Industries, Inc.
    Inventor: Lester V. Molenaar