Patents by Inventor David Glenn Grill

David Glenn Grill 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).

  • Putting trainer
    Patent number: 11045707
    Abstract: A putting trainer, as described herein, is used for practicing golfing with a golf club with a head. The putting trainer is for use on a generally smooth putting surface. The putting trainer has a body and at least one obstacle.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: June 29, 2021
    Inventor: David Glenn Grill
  • Putting trainer
    Patent number: 9993714
    Abstract: A putting trainer, as described herein, is used for practicing golfing with a golf club with a head. The putting trainer is for use on a generally smooth putting surface. The putting trainer has a body and at least one obstacle.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: June 12, 2018
    Inventor: David Glenn Grill
  • Putting trainer
    Patent number: 9457254
    Abstract: A putting trainer, as described herein, is used for practicing golfing with a golf club with a head. The putting trainer is for use on a generally smooth putting surface. The putting trainer has a body and at least one obstacle.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: October 4, 2016
    Inventor: David Glenn Grill
  • Sheet straigtener
    Patent number: D690539
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: October 1, 2013
    Inventor: David Glenn Grill
  • Mitt trainer
    Patent number: D798408
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: September 26, 2017
    Inventor: David Glenn Grill