Patents by Inventor Symcha Blass

Symcha Blass 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).

  • Drip level irrigation
    Patent number: RE29546
    Abstract: An irrigation dripper unit for use in irrigation in association with an irrigation supply pipe and also, when combined with a supply pipe, to form together with the supply pipe an integral unit. The dripper unit can be connected in series with the supply pipe or, when constituting a part of the integral unit, is connected in series with the supply pipe and has means to tap off a portion of the water flowing through the unit and to discharge such portion at a low drip rate.
    Type: Grant
    Filed: September 12, 1973
    Date of Patent: February 21, 1978
    Assignee: Ishajahu Blass
    Inventors: Symcha Blass, Ishajahu Blass